Papillorenal syndrome physical examination: Difference between revisions

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[[File:Renal-coloboma syndrome.png|thumb|420x420px|'''Renal-coloboma syndrome- Eyes and renal manifestations observed clinically.''' Right (A) and Left (B) wide and deeply excavated optic disc shown in the image suggestive of optic disc dysplasia, also called a variant of "''Morning glory''". Right (C) and Left (D) eye showing bilateral optic disc dysplasia and Macular degeneration of the left eye, Surrounded by numerous arrows shown. (E) Glomerulus showing mesangial cell proliferation on hematoxylin and eosin stain]]
[[File:Renal-coloboma syndrome.png|thumb|420x420px|'''Renal-coloboma syndrome- Eyes and renal manifestations observed clinically.''' Right (A) and Left (B) wide and deeply excavated optic disc shown in the image suggestive of optic disc dysplasia, also called a variant of "''Morning glory''". Right (C) and Left (D) eye showing bilateral optic disc dysplasia and Macular degeneration of the left eye, Surrounded by numerous arrows shown. (E) Glomerulus showing mesangial cell proliferation on hematoxylin and eosin stain]]
   
   
Renal-coloboma syndrome mainly involves [[Eye|eyes]] and [[kidneys]]. The organ-specific abnormalities commonly corresponds to  tissue specific [[PAX2]] gene<ref name="pmid9783702">{{cite journal |vauthors=Cunliffe HE, McNoe LA, Ward TA, Devriendt K, Brunner HG, Eccles MR |title=The prevalence of PAX2 mutations in patients with isolated colobomas or colobomas associated with urogenital anomalies |journal=J. Med. Genet. |volume=35 |issue=10 |pages=806–12 |date=October 1998 |pmid=9783702 |pmc=1051454 |doi=10.1136/jmg.35.10.806 |url=}}</ref><ref name="pmid9106533">{{cite journal |vauthors=Schimmenti LA, Cunliffe HE, McNoe LA, Ward TA, French MC, Shim HH, Zhang YH, Proesmans W, Leys A, Byerly KA, Braddock SR, Masuno M, Imaizumi K, Devriendt K, Eccles MR |title=Further delineation of renal-coloboma syndrome in patients with extreme variability of phenotype and identical PAX2 mutations |journal=Am. J. Hum. Genet. |volume=60 |issue=4 |pages=869–78 |date=April 1997 |pmid=9106533 |pmc=1712484 |doi= |url=}}</ref> expression during the [[Embryonic|embryonic period]]. The commonly  affected [[tissues]] are [[inner ear]], [[brain]] (CNS), [[spinal cord]] and less commonly [[urogenital ridge]]<ref name="pmid9712525">{{cite journal |vauthors=Terzić J, Muller C, Gajović S, Saraga-Babić M |title=Expression of PAX2 gene during human development |journal=Int. J. Dev. Biol. |volume=42 |issue=5 |pages=701–7 |date=July 1998 |pmid=9712525 |doi= |url=}}</ref><ref name="pmid10869107">{{cite journal |vauthors=Tellier AL, Amiel J, Delezoide AL, Audollent S, Augé J, Esnault D, Encha-Razavi F, Munnich A, Lyonnet S, Vekemans M, Attié-Bitach T |title=Expression of the PAX2 gene in human embryos and exclusion in the CHARGE syndrome |journal=Am. J. Med. Genet. |volume=93 |issue=2 |pages=85–8 |date=July 2000 |pmid=10869107 |doi=10.1002/1096-8628(20000717)93:2<85::aid-ajmg1>3.0.co;2-b |url=}}</ref><ref name="pmid14566649">{{cite journal |vauthors=Schimmenti LA, Manligas GS, Sieving PA |title=Optic nerve dysplasia and renal insufficiency in a family with a novel PAX2 mutation, Arg115X: further ophthalmologic delineation of the renal-coloboma syndrome |journal=Ophthalmic Genet. |volume=24 |issue=4 |pages=191–202 |date=December 2003 |pmid=14566649 |doi=10.1076/opge.24.4.191.17229 |url=}}</ref>
Renal-coloboma syndrome mainly involves eyes and kidneys. The organ-specific abnormalities commonly corresponds to  tissue specific PAX2 gene<ref name="pmid9783702">{{cite journal |vauthors=Cunliffe HE, McNoe LA, Ward TA, Devriendt K, Brunner HG, Eccles MR |title=The prevalence of PAX2 mutations in patients with isolated colobomas or colobomas associated with urogenital anomalies |journal=J. Med. Genet. |volume=35 |issue=10 |pages=806–12 |date=October 1998 |pmid=9783702 |pmc=1051454 |doi=10.1136/jmg.35.10.806 |url=}}</ref><ref name="pmid9106533">{{cite journal |vauthors=Schimmenti LA, Cunliffe HE, McNoe LA, Ward TA, French MC, Shim HH, Zhang YH, Proesmans W, Leys A, Byerly KA, Braddock SR, Masuno M, Imaizumi K, Devriendt K, Eccles MR |title=Further delineation of renal-coloboma syndrome in patients with extreme variability of phenotype and identical PAX2 mutations |journal=Am. J. Hum. Genet. |volume=60 |issue=4 |pages=869–78 |date=April 1997 |pmid=9106533 |pmc=1712484 |doi= |url=}}</ref> expression during the embryonic period. The commonly  affected tissues are inner ear, brain (CNS), spinal cord and less commonly urogenital ridge<ref name="pmid9712525">{{cite journal |vauthors=Terzić J, Muller C, Gajović S, Saraga-Babić M |title=Expression of PAX2 gene during human development |journal=Int. J. Dev. Biol. |volume=42 |issue=5 |pages=701–7 |date=July 1998 |pmid=9712525 |doi= |url=}}</ref><ref name="pmid10869107">{{cite journal |vauthors=Tellier AL, Amiel J, Delezoide AL, Audollent S, Augé J, Esnault D, Encha-Razavi F, Munnich A, Lyonnet S, Vekemans M, Attié-Bitach T |title=Expression of the PAX2 gene in human embryos and exclusion in the CHARGE syndrome |journal=Am. J. Med. Genet. |volume=93 |issue=2 |pages=85–8 |date=July 2000 |pmid=10869107 |doi=10.1002/1096-8628(20000717)93:2<85::aid-ajmg1>3.0.co;2-b |url=}}</ref><ref name="pmid14566649">{{cite journal |vauthors=Schimmenti LA, Manligas GS, Sieving PA |title=Optic nerve dysplasia and renal insufficiency in a family with a novel PAX2 mutation, Arg115X: further ophthalmologic delineation of the renal-coloboma syndrome |journal=Ophthalmic Genet. |volume=24 |issue=4 |pages=191–202 |date=December 2003 |pmid=14566649 |doi=10.1076/opge.24.4.191.17229 |url=}}</ref>


===Ocular Abnormalities===
===Ocular Abnormalities===
The [[eye]] findings are-  
The eye findings are-  


*Enlargement of the [[optic disc]] with [[Blood vessel|blood vessels]] seen coming out from the periphery.
*Enlargement of the optic disc with blood vessels seen coming out from the periphery.
*[[Retinal]] vessels observed in patients with [[Renal-coloboma syndrome|RCS]] are more in number and [[tortuosity]] as compared to see in the normal individuals.
*Retinal vessels observed in patients with RCS  are more in number and tortuosity as compared to see in the normal individuals.
*Other [[Eye|eye anomalies]] seen in patients with [[Renal-coloboma syndrome|RCS]] are [[optic nerve]] dysplasia, morning glory abnormality.
*Other eye anomalies seen in patients with RCS are optic nerve dysplasia, morning glory abnormality.
*Less common seen anomalies are:
*Less common seen anomalies are:
**Scleral staphyloma,
**Scleral staphyloma,
**[[Optic nerve|Optic nerve cyst]],
**Optic nerve cyst,
**[[Microphthalmia]]
**Microphthalmia
**Reduced [[corneal]] diameters
**Reduced corneal diameters
**[[Foveal hypoplasia]] and [[Macular|macula]]<nowiki/>r anomalies<ref name="pmid15652857">{{cite journal |vauthors=Higashide T, Wada T, Sakurai M, Yokoyama H, Sugiyama K |title=Macular abnormalities and optic disk anomaly associated with a new PAX2 missense mutation |journal=Am. J. Ophthalmol. |volume=139 |issue=1 |pages=203–5 |date=January 2005 |pmid=15652857 |doi=10.1016/j.ajo.2004.07.021 |url=}}</ref><ref name="pmid18609495">{{cite journal |vauthors=Samimi S, Antignac C, Combe C, Lacombe D, Renaud Rougier MB, Korobelnik JF |title=Bilateral macular detachment caused by bilateral optic nerve malformation in a papillorenal syndrome due to a new PAX2 mutation |journal=Eur J Ophthalmol |volume=18 |issue=4 |pages=656–8 |date=2008 |pmid=18609495 |doi=10.1177/112067210801800430 |url=}}</ref>
**Foveal hypoplasia and macular anomalies<ref name="pmid15652857">{{cite journal |vauthors=Higashide T, Wada T, Sakurai M, Yokoyama H, Sugiyama K |title=Macular abnormalities and optic disk anomaly associated with a new PAX2 missense mutation |journal=Am. J. Ophthalmol. |volume=139 |issue=1 |pages=203–5 |date=January 2005 |pmid=15652857 |doi=10.1016/j.ajo.2004.07.021 |url=}}</ref><ref name="pmid18609495">{{cite journal |vauthors=Samimi S, Antignac C, Combe C, Lacombe D, Renaud Rougier MB, Korobelnik JF |title=Bilateral macular detachment caused by bilateral optic nerve malformation in a papillorenal syndrome due to a new PAX2 mutation |journal=Eur J Ophthalmol |volume=18 |issue=4 |pages=656–8 |date=2008 |pmid=18609495 |doi=10.1177/112067210801800430 |url=}}</ref>


The visual acuity for patients with [[Renal-coloboma syndrome|RCS]] ranges from normal to marked impairment in vision to near [[blindness]]. [[Nystagmus]] and [[strabismus]] noted in patients involved in different studies may or may not be considered as a part of this syndrome. Anisometric visual acuity also noted in patients with [[Renal-coloboma syndrome|RCS]] varied from 20/20 in one [[eye]] to just mere light perception in the other eye. Other common findings seen in patients on examination include varying degrees of [[myopia]]<ref name="pmid8588587">{{cite journal |vauthors=Schimmenti LA, Pierpont ME, Carpenter BL, Kashtan CE, Johnson MR, Dobyns WB |title=Autosomal dominant optic nerve colobomas, vesicoureteral reflux, and renal anomalies |journal=Am. J. Med. Genet. |volume=59 |issue=2 |pages=204–8 |date=November 1995 |pmid=8588587 |doi=10.1002/ajmg.1320590217 |url=}}</ref><ref name="pmid11730657">{{cite journal |vauthors=Chung GW, Edwards AO, Schimmenti LA, Manligas GS, Zhang YH, Ritter R |title=Renal-coloboma syndrome: report of a novel PAX2 gene mutation |journal=Am. J. Ophthalmol. |volume=132 |issue=6 |pages=910–4 |date=December 2001 |pmid=11730657 |doi=10.1016/s0002-9394(01)01231-4 |url=}}</ref>, calcified degeneration of [[cornea]], [[retinal detachment]], lens abnormalities/luxation<ref name="pmid20075965">{{cite journal |vauthors=Beby F, Roche O, Cochat P, Ranchin B, Kohler R, Bonifas C, Cordier MP, Attie-Bitach T, Burillon C, Denis P |title=New ocular phenotype associated with a mutation in the PAX2 gene |journal=Eye (Lond) |volume=24 |issue=7 |pages=1293–4 |date=July 2010 |pmid=20075965 |doi=10.1038/eye.2009.330 |url=}}</ref> and/or progressive [[vision loss]].
The visual acuity for patients with RCS ranges from normal to marked impairment in vision to near blindness. Nystagmus and strabismus noted in patients involved in different studies may or may not be considered as a part of this syndrome. Anisometric visual acuity also noted in patients with RCS varied from 20/20 in one eye to just mere light perception in the other eye. Other common findings seen in patients on examination include varying degrees of myopia<ref name="pmid8588587">{{cite journal |vauthors=Schimmenti LA, Pierpont ME, Carpenter BL, Kashtan CE, Johnson MR, Dobyns WB |title=Autosomal dominant optic nerve colobomas, vesicoureteral reflux, and renal anomalies |journal=Am. J. Med. Genet. |volume=59 |issue=2 |pages=204–8 |date=November 1995 |pmid=8588587 |doi=10.1002/ajmg.1320590217 |url=}}</ref><ref name="pmid11730657">{{cite journal |vauthors=Chung GW, Edwards AO, Schimmenti LA, Manligas GS, Zhang YH, Ritter R |title=Renal-coloboma syndrome: report of a novel PAX2 gene mutation |journal=Am. J. Ophthalmol. |volume=132 |issue=6 |pages=910–4 |date=December 2001 |pmid=11730657 |doi=10.1016/s0002-9394(01)01231-4 |url=}}</ref>, calcified degeneration of cornea, retinal detachment, lens abnormalities/luxation<ref name="pmid20075965">{{cite journal |vauthors=Beby F, Roche O, Cochat P, Ranchin B, Kohler R, Bonifas C, Cordier MP, Attie-Bitach T, Burillon C, Denis P |title=New ocular phenotype associated with a mutation in the PAX2 gene |journal=Eye (Lond) |volume=24 |issue=7 |pages=1293–4 |date=July 2010 |pmid=20075965 |doi=10.1038/eye.2009.330 |url=}}</ref> and/or progressive vision loss.


===Renal Abnormalities===
===Renal Abnormalities===
[[Renal]] malformations are commonly seen in all the patents with [[Renal-coloboma syndrome|RCS]] and that too even before the appearance of eye anomalies<ref name="pmid11730657">{{cite journal |vauthors=Chung GW, Edwards AO, Schimmenti LA, Manligas GS, Zhang YH, Ritter R |title=Renal-coloboma syndrome: report of a novel PAX2 gene mutation |journal=Am. J. Ophthalmol. |volume=132 |issue=6 |pages=910–4 |date=December 2001 |pmid=11730657 |doi=10.1016/s0002-9394(01)01231-4 |url=}}</ref><ref name="pmid11093271">{{cite journal |vauthors=Amiel J, Audollent S, Joly D, Dureau P, Salomon R, Tellier AL, Augé J, Bouissou F, Antignac C, Gubler MC, Eccles MR, Munnich A, Vekemans M, Lyonnet S, Attié-Bitach T |title=PAX2 mutations in renal-coloboma syndrome: mutational hotspot and germline mosaicism |journal=Eur. J. Hum. Genet. |volume=8 |issue=11 |pages=820–6 |date=November 2000 |pmid=11093271 |doi=10.1038/sj.ejhg.5200539 |url=}}</ref>. Renal abnormalities found in RCS patients with [[PAX2]] [[gene]] expression are  
Renal malformations are commonly seen in all the patents with RCS and that too even before the appearance of eye anomalies<ref name="pmid11730657">{{cite journal |vauthors=Chung GW, Edwards AO, Schimmenti LA, Manligas GS, Zhang YH, Ritter R |title=Renal-coloboma syndrome: report of a novel PAX2 gene mutation |journal=Am. J. Ophthalmol. |volume=132 |issue=6 |pages=910–4 |date=December 2001 |pmid=11730657 |doi=10.1016/s0002-9394(01)01231-4 |url=}}</ref><ref name="pmid11093271">{{cite journal |vauthors=Amiel J, Audollent S, Joly D, Dureau P, Salomon R, Tellier AL, Augé J, Bouissou F, Antignac C, Gubler MC, Eccles MR, Munnich A, Vekemans M, Lyonnet S, Attié-Bitach T |title=PAX2 mutations in renal-coloboma syndrome: mutational hotspot and germline mosaicism |journal=Eur. J. Hum. Genet. |volume=8 |issue=11 |pages=820–6 |date=November 2000 |pmid=11093271 |doi=10.1038/sj.ejhg.5200539 |url=}}</ref>. Renal abnormalities found in RCS patients with PAX2 gene expression are  


*[[Renal]] hypoplasia/ hypo [[dysplasia]]<ref name="pmid16971658">{{cite journal |vauthors=Weber S, Moriniere V, Knüppel T, Charbit M, Dusek J, Ghiggeri GM, Jankauskiené A, Mir S, Montini G, Peco-Antic A, Wühl E, Zurowska AM, Mehls O, Antignac C, Schaefer F, Salomon R |title=Prevalence of mutations in renal developmental genes in children with renal hypodysplasia: results of the ESCAPE study |journal=J. Am. Soc. Nephrol. |volume=17 |issue=10 |pages=2864–70 |date=October 2006 |pmid=16971658 |doi=10.1681/ASN.2006030277 |url=}}</ref>  
*Renal hypoplasia/ hypo dysplasia<ref name="pmid16971658">{{cite journal |vauthors=Weber S, Moriniere V, Knüppel T, Charbit M, Dusek J, Ghiggeri GM, Jankauskiené A, Mir S, Montini G, Peco-Antic A, Wühl E, Zurowska AM, Mehls O, Antignac C, Schaefer F, Salomon R |title=Prevalence of mutations in renal developmental genes in children with renal hypodysplasia: results of the ESCAPE study |journal=J. Am. Soc. Nephrol. |volume=17 |issue=10 |pages=2864–70 |date=October 2006 |pmid=16971658 |doi=10.1681/ASN.2006030277 |url=}}</ref>  
**[[Kidney|kidneys]] that have a malformed function with a small number of functional [[glomeruli]] and can develop [[ESRD]] at any point in the [[disease]].
**kidneys that have a malformed function with a small number of functional glomeruli and can develop ESRD at any point in the disease.
**Somewhere around 10% of the [[patients]] with these kidneys found to have [[PAX2]] [[gene]] mutation<ref name="pmid11461952">{{cite journal |vauthors=Nishimoto K, Iijima K, Shirakawa T, Kitagawa K, Satomura K, Nakamura H, Yoshikawa N |title=PAX2 gene mutation in a family with isolated renal hypoplasia |journal=J. Am. Soc. Nephrol. |volume=12 |issue=8 |pages=1769–72 |date=August 2001 |pmid=11461952 |doi= |url=}}</ref><ref name="pmid21108633">{{cite journal |vauthors=Negrisolo S, Benetti E, Centi S, Della Vella M, Ghirardo G, Zanon GF, Murer L, Artifoni L |title=PAX2 gene mutations in pediatric and young adult transplant recipients: kidney and urinary tract malformations without ocular anomalies |journal=Clin. Genet. |volume=80 |issue=6 |pages=581–5 |date=December 2011 |pmid=21108633 |doi=10.1111/j.1399-0004.2010.01588.x |url=}}</ref>
**Somewhere around 10% of the patients with these kidneys found to have PAX2 gene mutation<ref name="pmid11461952">{{cite journal |vauthors=Nishimoto K, Iijima K, Shirakawa T, Kitagawa K, Satomura K, Nakamura H, Yoshikawa N |title=PAX2 gene mutation in a family with isolated renal hypoplasia |journal=J. Am. Soc. Nephrol. |volume=12 |issue=8 |pages=1769–72 |date=August 2001 |pmid=11461952 |doi= |url=}}</ref><ref name="pmid21108633">{{cite journal |vauthors=Negrisolo S, Benetti E, Centi S, Della Vella M, Ghirardo G, Zanon GF, Murer L, Artifoni L |title=PAX2 gene mutations in pediatric and young adult transplant recipients: kidney and urinary tract malformations without ocular anomalies |journal=Clin. Genet. |volume=80 |issue=6 |pages=581–5 |date=December 2011 |pmid=21108633 |doi=10.1111/j.1399-0004.2010.01588.x |url=}}</ref>
*[[Oligomenorrhoea|Oligomeganephronia]]<ref name="pmid11168927">{{cite journal |vauthors=Salomon R, Tellier AL, Attie-Bitach T, Amiel J, Vekemans M, Lyonnet S, Dureau P, Niaudet P, Gubler MC, Broyer M |title=PAX2 mutations in oligomeganephronia |journal=Kidney Int. |volume=59 |issue=2 |pages=457–62 |date=February 2001 |pmid=11168927 |doi=10.1046/j.1523-1755.2001.059002457.x |url=}}</ref>  
*Oligomeganephronia<ref name="pmid11168927">{{cite journal |vauthors=Salomon R, Tellier AL, Attie-Bitach T, Amiel J, Vekemans M, Lyonnet S, Dureau P, Niaudet P, Gubler MC, Broyer M |title=PAX2 mutations in oligomeganephronia |journal=Kidney Int. |volume=59 |issue=2 |pages=457–62 |date=February 2001 |pmid=11168927 |doi=10.1046/j.1523-1755.2001.059002457.x |url=}}</ref>  
**Condition seen in some of the patients with [[Renal-coloboma syndrome]] and this usually refers to the marked reduction in the number of functionally intact [[nephrons]]
**Condition seen in some of the patients with Renal-coloboma syndrome and this usually refers to the marked reduction in the number of functionally intact nephrons
**Compensatory [[glomerular]] [[hypertrophy]] seen.
**Compensatory glomerular hypertrophy seen.
**[[Glomerulosclerosis]] and [[Mesangial cell|mesangeal]] fibrous deposits are the most common findings seen on [[histopathology]].
**Glomerulosclerosis and meningeal fibrous deposits are the most common findings seen on histopathology.


*[[Multicystic dysplastic kidney|Multicystic dysplastic kidneys]]<ref name="pmid16049068">{{cite journal |vauthors=Fletcher J, Hu M, Berman Y, Collins F, Grigg J, McIver M, Jüppner H, Alexander SI |title=Multicystic dysplastic kidney and variable phenotype in a family with a novel deletion mutation of PAX2 |journal=J. Am. Soc. Nephrol. |volume=16 |issue=9 |pages=2754–61 |date=September 2005 |pmid=16049068 |doi=10.1681/ASN.2005030239 |url=}}</ref> - These are commonly seen in around 10% of the patients reported with [[Renal-coloboma syndrome|RCS.]]
*Multicystic dysplastic kidneys<ref name="pmid16049068">{{cite journal |vauthors=Fletcher J, Hu M, Berman Y, Collins F, Grigg J, McIver M, Jüppner H, Alexander SI |title=Multicystic dysplastic kidney and variable phenotype in a family with a novel deletion mutation of PAX2 |journal=J. Am. Soc. Nephrol. |volume=16 |issue=9 |pages=2754–61 |date=September 2005 |pmid=16049068 |doi=10.1681/ASN.2005030239 |url=}}</ref> - These are commonly seen in around 10% of the patients reported with RCS.


*[[Horseshoe kidney]]<ref name="pmid17269592">{{cite journal |vauthors=Taranta A, Palma A, De Luca V, Romanzo A, Massella L, Emma F, Dello Strologo L |title=Renal-coloboma syndrome: a single nucleotide deletion in the PAX2 gene at Exon 8 is associated with a highly variable phenotype |journal=Clin. Nephrol. |volume=67 |issue=1 |pages=1–4 |date=January 2007 |pmid=17269592 |doi=10.5414/cnp67001 |url=}}</ref>
*Horseshoe kidney<ref name="pmid17269592">{{cite journal |vauthors=Taranta A, Palma A, De Luca V, Romanzo A, Massella L, Emma F, Dello Strologo L |title=Renal-coloboma syndrome: a single nucleotide deletion in the PAX2 gene at Exon 8 is associated with a highly variable phenotype |journal=Clin. Nephrol. |volume=67 |issue=1 |pages=1–4 |date=January 2007 |pmid=17269592 |doi=10.5414/cnp67001 |url=}}</ref>


*[[ESRD]] - [[End-stage renal disease]] can happen anytime during the course of the [[disease]].  
*ESRD- End-stage renal disease can happen anytime during the course of the disease.  
**It can be present in the prenatal period<ref name="pmid8588587">{{cite journal |vauthors=Schimmenti LA, Pierpont ME, Carpenter BL, Kashtan CE, Johnson MR, Dobyns WB |title=Autosomal dominant optic nerve colobomas, vesicoureteral reflux, and renal anomalies |journal=Am. J. Med. Genet. |volume=59 |issue=2 |pages=204–8 |date=November 1995 |pmid=8588587 |doi=10.1002/ajmg.1320590217 |url=}}</ref><ref name="pmid11241473">{{cite journal |vauthors=Ford B, Rupps R, Lirenman D, Van Allen MI, Farquharson D, Lyons C, Friedman JM |title=Renal-coloboma syndrome: prenatal detection and clinical spectrum in a large family |journal=Am. J. Med. Genet. |volume=99 |issue=2 |pages=137–41 |date=March 2001 |pmid=11241473 |doi=10.1002/1096-8628(2000)9999:999<00::aid-ajmg1143>3.0.co;2-f |url=}}</ref> with a severe presentation of [[Hypoplastic]], aplastic kidneys, or in some cases as [[oligomenorrhea]] that ultimately in some cases leads to the loss of the [[fetus]].
**It can be present in the prenatal period<ref name="pmid8588587">{{cite journal |vauthors=Schimmenti LA, Pierpont ME, Carpenter BL, Kashtan CE, Johnson MR, Dobyns WB |title=Autosomal dominant optic nerve colobomas, vesicoureteral reflux, and renal anomalies |journal=Am. J. Med. Genet. |volume=59 |issue=2 |pages=204–8 |date=November 1995 |pmid=8588587 |doi=10.1002/ajmg.1320590217 |url=}}</ref><ref name="pmid11241473">{{cite journal |vauthors=Ford B, Rupps R, Lirenman D, Van Allen MI, Farquharson D, Lyons C, Friedman JM |title=Renal-coloboma syndrome: prenatal detection and clinical spectrum in a large family |journal=Am. J. Med. Genet. |volume=99 |issue=2 |pages=137–41 |date=March 2001 |pmid=11241473 |doi=10.1002/1096-8628(2000)9999:999<00::aid-ajmg1143>3.0.co;2-f |url=}}</ref> with a severe presentation of Hypoplastic, aplastic kidneys, or in some cases as oligomenorrhea that ultimately in some cases leads to the loss of the fetus.
**[[ESRD]] can be seen in the prenatal period or in adults in the late seventh decade.
**ESRD can be seen in the prenatal period or in adults in the late seventh decade.


*Other findings- [[Hypertension]], [[Proteinuria]], [[Vesicoureteral reflux|VUR]].  
*Other findings- Hypertension, Proteinuria, VUR.  
**[[Glomerulosclerosis]] and mesangial fibrosis are also seen in the evaluation of the patient with [[ultrasound]]<ref name="pmid9106533">{{cite journal |vauthors=Schimmenti LA, Cunliffe HE, McNoe LA, Ward TA, French MC, Shim HH, Zhang YH, Proesmans W, Leys A, Byerly KA, Braddock SR, Masuno M, Imaizumi K, Devriendt K, Eccles MR |title=Further delineation of renal-coloboma syndrome in patients with extreme variability of phenotype and identical PAX2 mutations |journal=Am. J. Hum. Genet. |volume=60 |issue=4 |pages=869–78 |date=April 1997 |pmid=9106533 |pmc=1712484 |doi= |url=}}</ref>
**Glomerulosclerosis and mesangial fibrosis are also seen in the evaluation of the patient with ultrasound<ref name="pmid9106533">{{cite journal |vauthors=Schimmenti LA, Cunliffe HE, McNoe LA, Ward TA, French MC, Shim HH, Zhang YH, Proesmans W, Leys A, Byerly KA, Braddock SR, Masuno M, Imaizumi K, Devriendt K, Eccles MR |title=Further delineation of renal-coloboma syndrome in patients with extreme variability of phenotype and identical PAX2 mutations |journal=Am. J. Hum. Genet. |volume=60 |issue=4 |pages=869–78 |date=April 1997 |pmid=9106533 |pmc=1712484 |doi= |url=}}</ref>
**[[Vesicoureteral reflux]] can be present in association to patients with [[Renal-coloboma syndrome|RCS]] but in most cases, this resolves spontaneously.
**Vesicoureteral reflux can be present in association to patients with RCS but in most cases, this resolves spontaneously.
**In severe cases it can be further complicated with [[Infection|infections]] of the [[urinary tract]] and fluid collection in the [[kidneys]] due to backflow( [[hydronephrosis]])<ref name="pmid16049068">{{cite journal |vauthors=Fletcher J, Hu M, Berman Y, Collins F, Grigg J, McIver M, Jüppner H, Alexander SI |title=Multicystic dysplastic kidney and variable phenotype in a family with a novel deletion mutation of PAX2 |journal=J. Am. Soc. Nephrol. |volume=16 |issue=9 |pages=2754–61 |date=September 2005 |pmid=16049068 |doi=10.1681/ASN.2005030239 |url=}}</ref> ultimately requiring the surgery for the resolution of the condition.
**In severe cases it can be further complicated with infections of the urinary tract and fluid collection in the kidneys due to backflow( hydronephrosis)<ref name="pmid16049068">{{cite journal |vauthors=Fletcher J, Hu M, Berman Y, Collins F, Grigg J, McIver M, Jüppner H, Alexander SI |title=Multicystic dysplastic kidney and variable phenotype in a family with a novel deletion mutation of PAX2 |journal=J. Am. Soc. Nephrol. |volume=16 |issue=9 |pages=2754–61 |date=September 2005 |pmid=16049068 |doi=10.1681/ASN.2005030239 |url=}}</ref> ultimately requiring the surgery for the resolution of the condition.


===Auditory findings===
===Auditory findings===


*[[Hearing loss]] can be seen in only 10% of the patients affected by [[Renal-coloboma syndrome]].   
*Hearing loss can be seen in only 10% of the patients affected by Renal-coloboma syndrome.   
**As [[PAX2]] [[gene]] expression during the childhood regulates the [[Cochlear duct|cochlear]] development, a mutation in the PAX2 gene can cause abnormalities with hearing
**As PAX2 gene expression during the childhood regulates the cochlear development, a mutation in the [[PAX2]] gene can cause abnormalities with hearing
**The High frequency hearing loss seen in patients with RCS appears to be significant factor rather than confusing it with age related hearing loss<ref name="pmid8951055">{{cite journal |vauthors=Torres M, Gómez-Pardo E, Gruss P |title=Pax2 contributes to inner ear patterning and optic nerve trajectory |journal=Development |volume=122 |issue=11 |pages=3381–91 |date=November 1996 |pmid=8951055 |doi= |url=}}</ref>
**The [[High frequency hearing loss]] seen in patients with [[Renal-coloboma syndrome|RCS]] appears to be significant factor rather than confusing it with age related hearing loss<ref name="pmid8951055">{{cite journal |vauthors=Torres M, Gómez-Pardo E, Gruss P |title=Pax2 contributes to inner ear patterning and optic nerve trajectory |journal=Development |volume=122 |issue=11 |pages=3381–91 |date=November 1996 |pmid=8951055 |doi= |url=}}</ref>


===Other Less common clinical associations===
===Other Less common clinical associations===
The other less common findings seen in patients with RCS are Ligamentous laxity. So far only one patient is identified with Chiari 1 malformation with PAX2 mutation.
The other less common findings seen in patients with [[Renal-coloboma syndrome|RCS]] are [[Ligamentous laxity]]. So far only one patient is identified with [[Chiari malformation|Chiari 1 malformation]] with [[PAX2]] mutation.
{| class="wikitable"
{| class="wikitable"
|+Approx. 30- 80% of the Patients have these Symptoms
|+Approx. 30- 80% of the Patients have these Symptoms

Revision as of 01:22, 12 September 2020

Overview

In most of the patients, the symptoms will differ depending upon a case by case basis. People with a similar disease might have a variable presentation and may not have all the mentioned symptoms. This valuable information is usually collected from the database of Human phenotype Ontology (HPO). The HPO usually collects the symptoms is usually described or mentioned in the various publications and medical resources. The most common manifestations are Enlargement of the optic disc with blood vessels seen coming out from the periphery. Retinal vessels observed in patients with Renal-coloboma syndrome are more in number and tortuosity as compared to see in normal individuals. Less commonly seen anomalies are Scleral staphyloma, Optic nerve cyst, Microphthalmia, Reduced corneal diameters, Foveal hypoplasia, and macular anomalies. The most common renal abnormalities are Renal hypoplasia/ hypo dysplasia kidneys that have a malformed function with a small number of functional glomeruli and can develop ESRD at any point in the disease. Somewhere around 10% of the patients with these kidneys found to have PAX2 gene mutation. Oligomeganephronia Condition seen in some of the patients with Renal-coloboma syndrome and this usually refers to the marked reduction in the number of functionally intact nephrons Compensatory glomerular hypertrophy seen. Glomerulosclerosis and meningeal fibrous deposits are the most common findings seen on histopathology. Multicystic dysplastic kidneys- These are commonly seen in around 10% of the patients reported with RCS. ESRD- End-stage renal disease can happen anytime during the course of the disease.

Approx. 80- 98% of the Patients have these Symptoms
Medical Terms Other Names
Optic Nerve Dysplasia
Renal Insufficiency Renal failure


Physical examination

Renal-coloboma syndrome- Eyes and renal manifestations observed clinically. Right (A) and Left (B) wide and deeply excavated optic disc shown in the image suggestive of optic disc dysplasia, also called a variant of "Morning glory". Right (C) and Left (D) eye showing bilateral optic disc dysplasia and Macular degeneration of the left eye, Surrounded by numerous arrows shown. (E) Glomerulus showing mesangial cell proliferation on hematoxylin and eosin stain

Renal-coloboma syndrome mainly involves eyes and kidneys. The organ-specific abnormalities commonly corresponds to tissue specific PAX2 gene[1][2] expression during the embryonic period. The commonly affected tissues are inner ear, brain (CNS), spinal cord and less commonly urogenital ridge[3][4][5]

Ocular Abnormalities

The eye findings are-

  • Enlargement of the optic disc with blood vessels seen coming out from the periphery.
  • Retinal vessels observed in patients with RCS are more in number and tortuosity as compared to see in the normal individuals.
  • Other eye anomalies seen in patients with RCS are optic nerve dysplasia, morning glory abnormality.
  • Less common seen anomalies are:
    • Scleral staphyloma,
    • Optic nerve cyst,
    • Microphthalmia
    • Reduced corneal diameters
    • Foveal hypoplasia and macular anomalies[6][7]

The visual acuity for patients with RCS ranges from normal to marked impairment in vision to near blindness. Nystagmus and strabismus noted in patients involved in different studies may or may not be considered as a part of this syndrome. Anisometric visual acuity also noted in patients with RCS varied from 20/20 in one eye to just mere light perception in the other eye. Other common findings seen in patients on examination include varying degrees of myopia[8][9], calcified degeneration of cornea, retinal detachment, lens abnormalities/luxation[10] and/or progressive vision loss.

Renal Abnormalities

Renal malformations are commonly seen in all the patents with RCS and that too even before the appearance of eye anomalies[9][11]. Renal abnormalities found in RCS patients with PAX2 gene expression are

  • Renal hypoplasia/ hypo dysplasia[12]
    • kidneys that have a malformed function with a small number of functional glomeruli and can develop ESRD at any point in the disease.
    • Somewhere around 10% of the patients with these kidneys found to have PAX2 gene mutation[13][14]
  • Oligomeganephronia[15]
    • Condition seen in some of the patients with Renal-coloboma syndrome and this usually refers to the marked reduction in the number of functionally intact nephrons
    • Compensatory glomerular hypertrophy seen.
    • Glomerulosclerosis and meningeal fibrous deposits are the most common findings seen on histopathology.
  • Multicystic dysplastic kidneys[16] - These are commonly seen in around 10% of the patients reported with RCS.
  • Horseshoe kidney[17]
  • ESRD- End-stage renal disease can happen anytime during the course of the disease.
    • It can be present in the prenatal period[8][18] with a severe presentation of Hypoplastic, aplastic kidneys, or in some cases as oligomenorrhea that ultimately in some cases leads to the loss of the fetus.
    • ESRD can be seen in the prenatal period or in adults in the late seventh decade.
  • Other findings- Hypertension, Proteinuria, VUR.
    • Glomerulosclerosis and mesangial fibrosis are also seen in the evaluation of the patient with ultrasound[2]
    • Vesicoureteral reflux can be present in association to patients with RCS but in most cases, this resolves spontaneously.
    • In severe cases it can be further complicated with infections of the urinary tract and fluid collection in the kidneys due to backflow( hydronephrosis)[16] ultimately requiring the surgery for the resolution of the condition.

Auditory findings

  • Hearing loss can be seen in only 10% of the patients affected by Renal-coloboma syndrome.
    • As PAX2 gene expression during the childhood regulates the cochlear development, a mutation in the PAX2 gene can cause abnormalities with hearing
    • The High frequency hearing loss seen in patients with RCS appears to be significant factor rather than confusing it with age related hearing loss[19]

Other Less common clinical associations

The other less common findings seen in patients with RCS are Ligamentous laxity. So far only one patient is identified with Chiari 1 malformation with PAX2 mutation.

Approx. 30- 80% of the Patients have these Symptoms
Medical Terms Other Names
Multicystic kidney dysplasia
Myopia Near Sighted

Near Sightedness

Close Sightedness

Renal Hypoplsia
Small Kidneys

Underdeveloped Kidneys

Renal dysplasia
Stage 5 Chronic Kidney Disease
Visual Impairment Impairment in vision

Loss of eye sight

Vesicoureteral Reflux
Approx. 5% - 25% of the Patients have these Symptoms
Medical Terms Other names
Cataract Clouding of the eye lens
Horse shoe kidneys
Lens Luxation Dislocated Lens
Hearing Impairment
Nephrolithiasis Kidney Stones
Nystagmus Rapid, Involuntary, rhythmic eye movements
Renal Malrotation
Retinal detachment
Strabismus Cross Eyes

Squint

Retinal Coloboma Hole in the back side of eye

References

  1. Cunliffe HE, McNoe LA, Ward TA, Devriendt K, Brunner HG, Eccles MR (October 1998). "The prevalence of PAX2 mutations in patients with isolated colobomas or colobomas associated with urogenital anomalies". J. Med. Genet. 35 (10): 806–12. doi:10.1136/jmg.35.10.806. PMC 1051454. PMID 9783702.
  2. 2.0 2.1 Schimmenti LA, Cunliffe HE, McNoe LA, Ward TA, French MC, Shim HH, Zhang YH, Proesmans W, Leys A, Byerly KA, Braddock SR, Masuno M, Imaizumi K, Devriendt K, Eccles MR (April 1997). "Further delineation of renal-coloboma syndrome in patients with extreme variability of phenotype and identical PAX2 mutations". Am. J. Hum. Genet. 60 (4): 869–78. PMC 1712484. PMID 9106533.
  3. Terzić J, Muller C, Gajović S, Saraga-Babić M (July 1998). "Expression of PAX2 gene during human development". Int. J. Dev. Biol. 42 (5): 701–7. PMID 9712525.
  4. Tellier AL, Amiel J, Delezoide AL, Audollent S, Augé J, Esnault D, Encha-Razavi F, Munnich A, Lyonnet S, Vekemans M, Attié-Bitach T (July 2000). "Expression of the PAX2 gene in human embryos and exclusion in the CHARGE syndrome". Am. J. Med. Genet. 93 (2): 85–8. doi:10.1002/1096-8628(20000717)93:2<85::aid-ajmg1>3.0.co;2-b. PMID 10869107.
  5. Schimmenti LA, Manligas GS, Sieving PA (December 2003). "Optic nerve dysplasia and renal insufficiency in a family with a novel PAX2 mutation, Arg115X: further ophthalmologic delineation of the renal-coloboma syndrome". Ophthalmic Genet. 24 (4): 191–202. doi:10.1076/opge.24.4.191.17229. PMID 14566649.
  6. Higashide T, Wada T, Sakurai M, Yokoyama H, Sugiyama K (January 2005). "Macular abnormalities and optic disk anomaly associated with a new PAX2 missense mutation". Am. J. Ophthalmol. 139 (1): 203–5. doi:10.1016/j.ajo.2004.07.021. PMID 15652857.
  7. Samimi S, Antignac C, Combe C, Lacombe D, Renaud Rougier MB, Korobelnik JF (2008). "Bilateral macular detachment caused by bilateral optic nerve malformation in a papillorenal syndrome due to a new PAX2 mutation". Eur J Ophthalmol. 18 (4): 656–8. doi:10.1177/112067210801800430. PMID 18609495.
  8. 8.0 8.1 Schimmenti LA, Pierpont ME, Carpenter BL, Kashtan CE, Johnson MR, Dobyns WB (November 1995). "Autosomal dominant optic nerve colobomas, vesicoureteral reflux, and renal anomalies". Am. J. Med. Genet. 59 (2): 204–8. doi:10.1002/ajmg.1320590217. PMID 8588587.
  9. 9.0 9.1 Chung GW, Edwards AO, Schimmenti LA, Manligas GS, Zhang YH, Ritter R (December 2001). "Renal-coloboma syndrome: report of a novel PAX2 gene mutation". Am. J. Ophthalmol. 132 (6): 910–4. doi:10.1016/s0002-9394(01)01231-4. PMID 11730657.
  10. Beby F, Roche O, Cochat P, Ranchin B, Kohler R, Bonifas C, Cordier MP, Attie-Bitach T, Burillon C, Denis P (July 2010). "New ocular phenotype associated with a mutation in the PAX2 gene". Eye (Lond). 24 (7): 1293–4. doi:10.1038/eye.2009.330. PMID 20075965.
  11. Amiel J, Audollent S, Joly D, Dureau P, Salomon R, Tellier AL, Augé J, Bouissou F, Antignac C, Gubler MC, Eccles MR, Munnich A, Vekemans M, Lyonnet S, Attié-Bitach T (November 2000). "PAX2 mutations in renal-coloboma syndrome: mutational hotspot and germline mosaicism". Eur. J. Hum. Genet. 8 (11): 820–6. doi:10.1038/sj.ejhg.5200539. PMID 11093271.
  12. Weber S, Moriniere V, Knüppel T, Charbit M, Dusek J, Ghiggeri GM, Jankauskiené A, Mir S, Montini G, Peco-Antic A, Wühl E, Zurowska AM, Mehls O, Antignac C, Schaefer F, Salomon R (October 2006). "Prevalence of mutations in renal developmental genes in children with renal hypodysplasia: results of the ESCAPE study". J. Am. Soc. Nephrol. 17 (10): 2864–70. doi:10.1681/ASN.2006030277. PMID 16971658.
  13. Nishimoto K, Iijima K, Shirakawa T, Kitagawa K, Satomura K, Nakamura H, Yoshikawa N (August 2001). "PAX2 gene mutation in a family with isolated renal hypoplasia". J. Am. Soc. Nephrol. 12 (8): 1769–72. PMID 11461952.
  14. Negrisolo S, Benetti E, Centi S, Della Vella M, Ghirardo G, Zanon GF, Murer L, Artifoni L (December 2011). "PAX2 gene mutations in pediatric and young adult transplant recipients: kidney and urinary tract malformations without ocular anomalies". Clin. Genet. 80 (6): 581–5. doi:10.1111/j.1399-0004.2010.01588.x. PMID 21108633.
  15. Salomon R, Tellier AL, Attie-Bitach T, Amiel J, Vekemans M, Lyonnet S, Dureau P, Niaudet P, Gubler MC, Broyer M (February 2001). "PAX2 mutations in oligomeganephronia". Kidney Int. 59 (2): 457–62. doi:10.1046/j.1523-1755.2001.059002457.x. PMID 11168927.
  16. 16.0 16.1 Fletcher J, Hu M, Berman Y, Collins F, Grigg J, McIver M, Jüppner H, Alexander SI (September 2005). "Multicystic dysplastic kidney and variable phenotype in a family with a novel deletion mutation of PAX2". J. Am. Soc. Nephrol. 16 (9): 2754–61. doi:10.1681/ASN.2005030239. PMID 16049068.
  17. Taranta A, Palma A, De Luca V, Romanzo A, Massella L, Emma F, Dello Strologo L (January 2007). "Renal-coloboma syndrome: a single nucleotide deletion in the PAX2 gene at Exon 8 is associated with a highly variable phenotype". Clin. Nephrol. 67 (1): 1–4. doi:10.5414/cnp67001. PMID 17269592.
  18. Ford B, Rupps R, Lirenman D, Van Allen MI, Farquharson D, Lyons C, Friedman JM (March 2001). "Renal-coloboma syndrome: prenatal detection and clinical spectrum in a large family". Am. J. Med. Genet. 99 (2): 137–41. doi:10.1002/1096-8628(2000)9999:999<00::aid-ajmg1143>3.0.co;2-f. PMID 11241473.
  19. Torres M, Gómez-Pardo E, Gruss P (November 1996). "Pax2 contributes to inner ear patterning and optic nerve trajectory". Development. 122 (11): 3381–91. PMID 8951055.

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