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==History and Symptoms==


===Symptoms===
===Skin===
* Skin problems, such as light patches and thickened skin
[[Symptoms]] develop in almost all patients with TSC and include:<ref name=":0">Henske, Elizabeth P., et al. "Tuberous sclerosis complex." ''Nature reviews Disease primers'' 2.1 (2016): 1-18.</ref>
* [[Seizures]]
* [[Behavior problems]]
* Learning disabilities - seen in 50% patients ranging from mild to profound,<ref name="memory-deficits">{{cite journal
| author = Ridler K, ''et al''
| title = Neuroanatomical Correlates of Memory Deficits in Tuberous Sclerosis Complex
| journal = Cerebral Cortex
| year = 2006
| id = PMID 16603714 }}</ref> and studies have reported that between 25% and 61% of affected individuals meet the diagnostic criteria for [[autism]], with an even higher proportion showing features of a broader [[pervasive developmental disorder]].<ref name="autism-prevalence">{{cite journal
| author = Harrison JE, Bolton, PF
| title = Annotation: Tuberous sclerosis
| journal = Journal of Child Psychology and Psychiatry
| year = 1997
| pages = 603-614
| volume = 38
| id = PMID 9315970}}</ref>
* [[Mental retardation]]
* Kidney problems


Most of the neurologic manifestations of tuberous sclerosis are due to the effects of hamartia (malformed tissue such as the cortical tubers),[[hamartoma]]s (benign growths such as facial [[angiofibroma]] and subependymal nodules) and, very rarely, cancerous hamartoblastomas on the brain tissue.
* Ungual [[Fibroma|fibromas]];
* Facial [[Angiofibroma|angiofibromas]] (may demand treatment and may worsen with [[UV]] exposure);
* Shagreen patches (oval-shaped lesions, generally skin-colored but can be sometimes pigmented, may be crinkled or smooth);
* Hocal [[Hypopigmented area|hypopigmented]] macules (ash-leaf spots);
* Dental enamel pits (present in 100% of the patients);
* Oral [[Fibroma|fibromas]];


In infants, the first clue is often the presence of [[seizures]], [[delayed development]] or white patches on the skin. A full clinical diagnostic workup should be undertaken in such situations.<ref name="TSFactSheet">{{cite web
===Ocular===
| url = http://www.ninds.nih.gov/disorders/tuberous_sclerosis/detail_tuberous_sclerosis.htm
 
| title = Tuberous Sclerosis Fact Sheet
* Retinal [[astrocytic]] [[hamartomas]] (tumors of the retinal nerve);
| accessdate = 2006-10-03
* Retinal achromic patches (light or dark spots on the eye).<ref name=":0" />
| date = [[2006-04-11]]
 
| publisher = National Institute of Neurological Disorders and Stroke
===Renal===
}}</ref><ref name="TSAclinicalGuidelines">{{cite web
 
| url = http://www.tuberous-sclerosis.org/publications/clinicalguidelinessummary.pdf
* Renal [[Angiomyolipoma|angiomyolipomas]] (present in 60-80% of the TSC patients), benign tumors composed of abnormal vessels, [[Smooth-muscle cell|smooth-muscle cells]] and fat cells which may cause [[hematuria]]. These tumors can be detectable in early childhood by [[Magnetic resonance imaging|MRI]], [[CT-scans|CT]] or [[ultrasound]]. Although benign, in TSC they are commonly multiple and bilateral. [[Angiomyolipoma|Angiomyolipomas]] larger than 4 cm are at risk for potentially catastrophic [[hemorrhage]] either spontaneously or with minimal [[trauma]];
| title = Summary of Clinical guidelines for the care of patients with Tuberous Sclerosis Complex
* Epithelial cysts;
| accessdate = 2006-10-03
*[[Polycystic kidney disease]] (as 2-3% of the patients carries a deletion that affects both [[TSC2]] gene and one of the genes that lead to [[autosomal dominant polycystic kidney disease]]);
| year = 2002
*[[Renal-cell carcinoma|Renal-cell carcinomas]] that may be diagnosed at a younger age (mean 28 years);<ref name=":0" /><ref name=":1">Crino PB, Nathanson KL, Henske EP (September 2006). "The tuberous sclerosis complex". ''The New England Journal of Medicine''. '''355''' (13): 1345–56. [[Digital object identifier|doi]]:10.1056/NEJMra055323. <nowiki>PMID 17005952</nowiki>.</ref>
| month = April
* Patients ≥18 years may have higher rates of [[chronic kidney disease]], [[hematuria]], [[kidney failure]], [[embolization]] (EMB), and partial and complete [[nephrectomy]] compared to patients <18 years.<ref>Song, Xue, et al. "Natural history of patients with tuberous sclerosis complex related renal angiomyolipoma." ''Current medical research and opinion'' 33.7 (2017): 1277-1282.</ref>
| publisher = Tuberous Sclerosis Association
 
}}</ref>
===Pulmonary===
 
*[[Lymphangiomyomatosis]] affects mostly women and is a proliferation of smooth-muscle cells that may result in [[cystic]] changes in the [[Lung|lungs]]. Recent genetic analysis has shown that the proliferative [[Bronchiolar epithelium|bronchiolar]] smooth muscle in TSC-related [[lymphangioleiomyomatosis]] is monoclonal [[metastasis]] from a coexisting renal [[angiomyolipoma]]. Cases of TSC-related [[lymphangioleiomyomatosis]] recurring following lung transplant have been reported.<ref>Henske EP (December 2003). "Metastasis of benign tumor cells in tuberous sclerosis complex". ''Genes, Chromosomes & Cancer''. '''38''' (4): 376–81. [[Digital object identifier|doi]]:10.1002/gcc.10252. <nowiki>PMID 14566858</nowiki>.</ref> Diagnosed mostly during early adulthood, may cause [[pneumothorax]].
 
*[[Multifocal micronodular pneumocyte hyperplasia]] can occur in both men and women and are mostly asymptomatic.<ref name=":0" /><ref name=":1" />
 
===Neurologic===
These manifestations are one of the major causes of morbidity in patients with TSC.
 
*[[Epilepsy]], which is the most common neurological presentation occurring in 70-80% of patients and may complicate with [[infantile spasms]], a severe form of [[epileptic]] syndrome. If epilepsy presents with an early onset t is associated with [[cognitive disabilities]], which are also very [[prevalent]] in such patients. In 2020 a paper showed that [[epilepsy]] remission by appropriate treatment in early life can possibly prevent [[autism]] and [[intellectual disability]].<ref>Gupta, Ajay, et al. "Epilepsy and neurodevelopmental comorbidities in tuberous sclerosis complex: a natural history study." ''Pediatric Neurology'' (2020).</ref>
*[[Neuropsychiatric]] disorders are present in two-thirds of the patients and [[anxiety]] is one of the most common presentations. [[Autism]] is one possible manifestation and is especially associated with cerebral [[cortical tubers]]. It consists of neurologic tissue that grows in a different pattern, losing the normal six-layered [[Cerebral cortex|cortical]] structure, with [[dysmorphic]] neurons, large [[astrocytes]] and giant cells.
*[[Subependymal]] [[nodules]];
*[[Subependymal]] giant cell [[astrocytomas]], which may cause [[obstructive hydrocephalus]]. Risk of such benign tumors decreases after age of 20.<ref name=":1" /><ref name=":0" />
 
===Cardiovascular===
[[Rhabdomyomas]] may be present, being intramural or intracavitary in its distribution along the [[myocardium]]. May be detected in utero on fetuses and is associated with [[cardiac failure]]. Often disappear spontaneously in later life.<ref name=":0" />  80% of children under two-years-old with [[TSC]] have at least one [[rhabdomyoma]], and about 90% of those will have several.<ref>Hinton RB, Prakash A, Romp RL, Krueger DA, Knilans TK (November 2014). "Cardiovascular manifestations of tuberous sclerosis complex and summary of the revised diagnostic criteria and surveillance and management recommendations from the International Tuberous Sclerosis Consensus Group". ''Journal of the American Heart Association''. '''3''' (6): e001493. [[Digital object identifier|doi]]:10.1161/JAHA.114.001493. [[PubMed Central|PMC]] 4338742. <nowiki>PMID 25424575</nowiki>.</ref>
 
==Prognosis==
* The prognosis for individuals with [[TSC]] depends on the severity of symptoms, which range from mild [[skin]] abnormalities to varying degrees of [[learning disabilities]] and [[epilepsy]] to severe [[mental retardation]], uncontrollable [[Seizure|seizures]], and [[kidney failure]].


==References==
==References==


{{Reflist|2}}
{{Reflist|2}}
[[Image:TSC1.jpg|300x300px|Tuberous sclerosis skin lesion - Angiofibromas - image taken from: www.atlasdermatologico.com.br|left|thumb]]
[[Image:Ts22.jpg|300x300px|Tuberous sclerosis skin lesion - Ash-leaf spot - image taken from: www.atlasdermatologico.com.br|left|thumb]]
[[Image:TSC3.jpg|300x300px|Tuberous sclerosis skin lesion - Ungual fibroma - image taken from: www.atlasdermatologico.com.br|left|thumb]]
[[Category:Genetic disorders]]
[[Category:Genetic disorders]]
[[Category:Disease]]
[[Category:Disease]]
[[Category:Neurology]]
[[Category:Neurology]]
[[Category:Needs content]]
[[Category:Needs overview]]
[[Category:Needs overview]]

Latest revision as of 17:56, 23 June 2020

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: José Eduardo Riceto Loyola Junior, M.D.[2]

History and Symptoms

Skin

Symptoms develop in almost all patients with TSC and include:[1]

  • Ungual fibromas;
  • Facial angiofibromas (may demand treatment and may worsen with UV exposure);
  • Shagreen patches (oval-shaped lesions, generally skin-colored but can be sometimes pigmented, may be crinkled or smooth);
  • Hocal hypopigmented macules (ash-leaf spots);
  • Dental enamel pits (present in 100% of the patients);
  • Oral fibromas;

Ocular

  • Retinal astrocytic hamartomas (tumors of the retinal nerve);
  • Retinal achromic patches (light or dark spots on the eye).[1]

Renal

Pulmonary

Neurologic

These manifestations are one of the major causes of morbidity in patients with TSC.

Cardiovascular

Rhabdomyomas may be present, being intramural or intracavitary in its distribution along the myocardium. May be detected in utero on fetuses and is associated with cardiac failure. Often disappear spontaneously in later life.[1] 80% of children under two-years-old with TSC have at least one rhabdomyoma, and about 90% of those will have several.[6]

Prognosis

References

  1. 1.0 1.1 1.2 1.3 1.4 1.5 Henske, Elizabeth P., et al. "Tuberous sclerosis complex." Nature reviews Disease primers 2.1 (2016): 1-18.
  2. 2.0 2.1 2.2 Crino PB, Nathanson KL, Henske EP (September 2006). "The tuberous sclerosis complex". The New England Journal of Medicine. 355 (13): 1345–56. doi:10.1056/NEJMra055323. PMID 17005952.
  3. Song, Xue, et al. "Natural history of patients with tuberous sclerosis complex related renal angiomyolipoma." Current medical research and opinion 33.7 (2017): 1277-1282.
  4. Henske EP (December 2003). "Metastasis of benign tumor cells in tuberous sclerosis complex". Genes, Chromosomes & Cancer. 38 (4): 376–81. doi:10.1002/gcc.10252. PMID 14566858.
  5. Gupta, Ajay, et al. "Epilepsy and neurodevelopmental comorbidities in tuberous sclerosis complex: a natural history study." Pediatric Neurology (2020).
  6. Hinton RB, Prakash A, Romp RL, Krueger DA, Knilans TK (November 2014). "Cardiovascular manifestations of tuberous sclerosis complex and summary of the revised diagnostic criteria and surveillance and management recommendations from the International Tuberous Sclerosis Consensus Group". Journal of the American Heart Association. 3 (6): e001493. doi:10.1161/JAHA.114.001493. PMC 4338742. PMID 25424575.
Tuberous sclerosis skin lesion - Angiofibromas - image taken from: www.atlasdermatologico.com.br
Tuberous sclerosis skin lesion - Ash-leaf spot - image taken from: www.atlasdermatologico.com.br
Tuberous sclerosis skin lesion - Ungual fibroma - image taken from: www.atlasdermatologico.com.br