Fig. 4From: Colonic medullary carcinoma: an exceedingly rare type of colorectal malignancy: a case report and review of the literatureMismatch repair status evaluation using immunohistochemical biomarkers. Loss of MSH2 (MutS homolog 2) and MSH6 (MutS homolog 6) with retained MLH1(MutL homolog 1) and PMS2 (postmeiotic segregation increased 2), confirming microsatellite instabilityBack to article page