Difference between revisions of "Medullary colorectal carcinoma"
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*Beta-catenin +ve. | *Beta-catenin +ve. | ||
*MLH1 loss of staining. | *MLH1 loss of staining. | ||
*Calretinin (67%-73%){{cite journal |vauthors=Winn B, Tavares R, Fanion J, Noble L, Gao J, Sabo E, Resnick MB |title=Differentiating the undifferentiated: immunohistochemical profile of medullary carcinoma of the colon with an emphasis on intestinal differentiation |journal=Hum. Pathol. |volume=40 |issue=3 |pages=398–404 |date=March 2009 |pmid=18992917 |pmc=2657293 |doi=10.1016/j.humpath.2008.08.014 |url=}}{{cite journal |vauthors=Lin F, Shi J, Zhu S, Chen Z, Li A, Chen T, Wang HL, Liu H |title=Cadherin-17 and SATB2 are sensitive and specific immunomarkers for medullary carcinoma of the large intestine |journal=Arch. Pathol. Lab. Med. |volume=138 |issue=8 |pages=1015–26 |date=August 2014 |pmid=24437456 |doi=10.5858/arpa.2013-0452-OA |url=}} | |||
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Revision as of 21:37, 31 December 2019
Medullary colorectal carcinoma is a rare type of colorectal carcinoma.
General
- Rare subtype of colorectal carcinoma.
- Typically has Microsatellite instability.[1]
- Prognostic significance dependent on study.
Gross
- Well-circumscribed.
Microscopic
Features:
- Poorly differentiated carcinoma:
- Noninfiltrative border.
- Solid pattern/nests.
- No gland formation.
- Lymphocytic infiltrate.
DDx:
- Other (poorly differentiated) colorectal carcinomas.
- Carcinomas with neuroendocrine differentiation.
IHC
Features:[1]
- CDX2 +ve.
- Beta-catenin +ve.
- MLH1 loss of staining.
- Calretinin (67%-73%)"Differentiating the undifferentiated: immunohistochemical profile of medullary carcinoma of the colon with an emphasis on intestinal differentiation". Hum. Pathol. 40 (3): 398–404. March 2009. doi:10.1016/j.humpath.2008.08.014. PMC 2657293. PMID 18992917. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2657293/."Cadherin-17 and SATB2 are sensitive and specific immunomarkers for medullary carcinoma of the large intestine". Arch. Pathol. Lab. Med. 138 (8): 1015–26. August 2014. doi:10.5858/arpa.2013-0452-OA. PMID 24437456.
Note:
- CDX2, beta-catenin, MLH1 useful for differentiating from poorly differentiated colorectal carcinoma.
See also
References
- ↑ 1.0 1.1 "Medullary carcinoma of the colon: a case series and review of the literature". In Vivo 28 (3): 311–4. 2014. PMID 24815832.
- ↑ "Medullary colonic carcinoma with microsatellite instability has lower survival compared with conventional colonic adenocarcinoma with microsatellite instability". Prz Gastroenterol 12 (3): 208–214. 2017. doi:10.5114/pg.2016.64740. PMC 5672702. PMID 29123583. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5672702/.
- ↑ "Medullary colorectal carcinoma revisited: a clinical and pathological study of 102 cases". Ann. Surg. Oncol. 22 (9): 2988–96. September 2015. doi:10.1245/s10434-014-4355-5. PMID 25572685.