Linitis plastica pathophysiology: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 7: | Line 7: | ||
==Pathophysiology== | ==Pathophysiology== | ||
===Genetics=== | |||
*Germline mutations in the ''CDH1'' ([[E-cadherin]]) gene may be involved in the pathogenesis of hereditary form of diffuse gastric adenocarcinoma, that is transmitted in an autosomal dominant fashion, with 70% disease penetrance.<ref name=gl>Gastric linitis plastica. Orphanet. http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=GB&Expert=36273 Accessed on November 19, 2015.</ref><ref name="WolfGeigl2010">{{cite journal|last1=Wolf|first1=E.-M.|last2=Geigl|first2=J.B.|last3=Svrcek|first3=M.|last4=Vieth|first4=M.|last5=Langner|first5=C.|title=Hereditäres Magenkarzinom|journal=Der Pathologe|volume=31|issue=6|year=2010|pages=423–429|issn=0172-8113|doi=10.1007/s00292-010-1353-7}}</ref> | |||
===Gross pathology=== | |||
*On gross pathology, thick, rigid, leather bottle-like stomach from diffuse infiltration of the stomach wall by the tumor cells are characteristic findings of linitis plastica.<ref name=lp>Linitis plastica. Wikipedia. https://en.wikipedia.org/wiki/Linitis_plastica Accessed on November 18, 2015.</ref> | *On gross pathology, thick, rigid, leather bottle-like stomach from diffuse infiltration of the stomach wall by the tumor cells are characteristic findings of linitis plastica.<ref name=lp>Linitis plastica. Wikipedia. https://en.wikipedia.org/wiki/Linitis_plastica Accessed on November 18, 2015.</ref> | ||
*As a result of the infiltration and fibrosis, there is diffuse thickening and rigidity of the gastric wall, making the process of digestion difficult. | |||
*Metastasis to the [[peritoneum]], [[lymph node]]s and/or other organs usually occurs by the time linitis plastica is diagnosed. Linitis plastica may also occur secondary to metastasis from other primary cancers, particularly infiltrating lobular carcinoma of breast.<ref name=gl>Gastric linitis plastica. Orphanet. http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=GB&Expert=36273 Accessed on December 7, 2015.</ref> | |||
===Microscopic pathology=== | |||
*In diffuse type adenocarcinoma (mucinous, colloid), tumour cells are discohesive and secrete mucus, which is delivered in the interstitium, producing large pools of mucus or colloid (optically "empty" spaces). If the mucus remains inside the tumour cell, it pushes the nucleus to the periphery, leaving a "signet-ring cell" appearance. | |||
*On microscopic histopathological analysis, poorly differentiated, atypical [[signet ring cell]]s diffusely infiltrating the stomach wall, submucosal fibrosis and thickening, with minimal [[mucosa]]l involvement are characteristic findings of linitis plastica.<ref name="SchauerPeiper2011">{{cite journal|last1=Schauer|first1=M|last2=Peiper|first2=M|last3=Theisen|first3=J|last4=Knoefel|first4=W|title=Prognostic factors in patients with diffuse type gastric cancer (linitis plastica) after operative treatment|journal=European Journal of Medical Research|volume=16|issue=1|year=2011|pages=29|issn=2047-783X|doi=10.1186/2047-783X-16-1-29}}</ref><ref>Stomach cancer. Wikipedia. https://en.wikipedia.org/wiki/Stomach_cancer Accessed on November 19, 2015.</ref> | *On microscopic histopathological analysis, poorly differentiated, atypical [[signet ring cell]]s diffusely infiltrating the stomach wall, submucosal fibrosis and thickening, with minimal [[mucosa]]l involvement are characteristic findings of linitis plastica.<ref name="SchauerPeiper2011">{{cite journal|last1=Schauer|first1=M|last2=Peiper|first2=M|last3=Theisen|first3=J|last4=Knoefel|first4=W|title=Prognostic factors in patients with diffuse type gastric cancer (linitis plastica) after operative treatment|journal=European Journal of Medical Research|volume=16|issue=1|year=2011|pages=29|issn=2047-783X|doi=10.1186/2047-783X-16-1-29}}</ref><ref>Stomach cancer. Wikipedia. https://en.wikipedia.org/wiki/Stomach_cancer Accessed on November 19, 2015.</ref> | ||
* | *Superficial mucosal layers are usually spared and rarely show superficial ulcerations on endoscopy, that has a wide differential diagnosis, making the diagnosis even more difficult. The biopsies are falsely negative, as the disease remains mostly submucosal.<ref name="SchauerPeiper2011">{{cite journal|last1=Schauer|first1=M|last2=Peiper|first2=M|last3=Theisen|first3=J|last4=Knoefel|first4=W|title=Prognostic factors in patients with diffuse type gastric cancer (linitis plastica) after operative treatment|journal=European Journal of Medical Research|volume=16|issue=1|year=2011|pages=29|issn=2047-783X|doi=10.1186/2047-783X-16-1-29}}</ref> | ||
*Although the lower mucosal and submucosal layers are mostly involved, the muscular and subserosal layers may also be infiltrated with the neoplastic cells.<ref>{{Cite journal | *Although the lower mucosal and submucosal layers are mostly involved, the muscular and subserosal layers may also be infiltrated with the neoplastic cells.<ref>{{Cite journal | ||
| author = [[Bing Hu]], [[Nassim El Hajj]], [[Scott Sittler]], [[Nancy Lammert]], [[Robert Barnes]] & [[Aurelia Meloni-Ehrig]] | | author = [[Bing Hu]], [[Nassim El Hajj]], [[Scott Sittler]], [[Nancy Lammert]], [[Robert Barnes]] & [[Aurelia Meloni-Ehrig]] | ||
| Line 23: | Line 33: | ||
| pmid = 22943016 | | pmid = 22943016 | ||
}}</ref> | }}</ref> | ||
==References== | ==References== | ||
Revision as of 14:33, 8 December 2015
|
Linitis plastica Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Linitis plastica pathophysiology On the Web |
|
American Roentgen Ray Society Images of Linitis plastica pathophysiology |
|
Risk calculators and risk factors for Linitis plastica pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Soujanya Thummathati, MBBS [2]
Overview
On gross pathology, thick, rigid, leather bottle-like stomach from diffuse infiltration of the stomach wall by the tumor cells are characteristic findings of linitis plastica.[1] On microscopic histopathological analysis, atypical signet ring cells diffusely infiltrating the stomach wall, submucosal fibrosis and thickening, with minimal mucosal involvement are characteristic findings of linitis plastica.
Pathophysiology
Genetics
- Germline mutations in the CDH1 (E-cadherin) gene may be involved in the pathogenesis of hereditary form of diffuse gastric adenocarcinoma, that is transmitted in an autosomal dominant fashion, with 70% disease penetrance.[2][3]
Gross pathology
- On gross pathology, thick, rigid, leather bottle-like stomach from diffuse infiltration of the stomach wall by the tumor cells are characteristic findings of linitis plastica.[1]
- As a result of the infiltration and fibrosis, there is diffuse thickening and rigidity of the gastric wall, making the process of digestion difficult.
- Metastasis to the peritoneum, lymph nodes and/or other organs usually occurs by the time linitis plastica is diagnosed. Linitis plastica may also occur secondary to metastasis from other primary cancers, particularly infiltrating lobular carcinoma of breast.[2]
Microscopic pathology
- In diffuse type adenocarcinoma (mucinous, colloid), tumour cells are discohesive and secrete mucus, which is delivered in the interstitium, producing large pools of mucus or colloid (optically "empty" spaces). If the mucus remains inside the tumour cell, it pushes the nucleus to the periphery, leaving a "signet-ring cell" appearance.
- On microscopic histopathological analysis, poorly differentiated, atypical signet ring cells diffusely infiltrating the stomach wall, submucosal fibrosis and thickening, with minimal mucosal involvement are characteristic findings of linitis plastica.[4][5]
- Superficial mucosal layers are usually spared and rarely show superficial ulcerations on endoscopy, that has a wide differential diagnosis, making the diagnosis even more difficult. The biopsies are falsely negative, as the disease remains mostly submucosal.[4]
- Although the lower mucosal and submucosal layers are mostly involved, the muscular and subserosal layers may also be infiltrated with the neoplastic cells.[6]
References
- ↑ 1.0 1.1 Linitis plastica. Wikipedia. https://en.wikipedia.org/wiki/Linitis_plastica Accessed on November 18, 2015.
- ↑ 2.0 2.1 Gastric linitis plastica. Orphanet. http://www.orpha.net/consor/cgi-bin/OC_Exp.php?Lng=GB&Expert=36273 Accessed on November 19, 2015.
- ↑ Wolf, E.-M.; Geigl, J.B.; Svrcek, M.; Vieth, M.; Langner, C. (2010). "Hereditäres Magenkarzinom". Der Pathologe. 31 (6): 423–429. doi:10.1007/s00292-010-1353-7. ISSN 0172-8113.
- ↑ 4.0 4.1 Schauer, M; Peiper, M; Theisen, J; Knoefel, W (2011). "Prognostic factors in patients with diffuse type gastric cancer (linitis plastica) after operative treatment". European Journal of Medical Research. 16 (1): 29. doi:10.1186/2047-783X-16-1-29. ISSN 2047-783X.
- ↑ Stomach cancer. Wikipedia. https://en.wikipedia.org/wiki/Stomach_cancer Accessed on November 19, 2015.
- ↑ Bing Hu, Nassim El Hajj, Scott Sittler, Nancy Lammert, Robert Barnes & Aurelia Meloni-Ehrig (2012). "Gastric cancer: Classification, histology and application of molecular pathology". Journal of gastrointestinal oncology. 3 (3): 251–261. doi:10.3978/j.issn.2078-6891.2012.021. PMID 22943016. Unknown parameter
|month=ignored (help)