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. 2021 Jan 25;13(1):e12899. doi: 10.7759/cureus.12899

Figure 1. Immunohistochemical analyses of the biopsied colonic adenocarcinoma.

Figure 1

Biopsy of the cecal mass reveals sheet of cancerous cells (A, H&E stain). The cells show loss of nuclear immunoreactivity for MLH1 (B, immunostain) and PMS2 (C, immunostain) in the cancer.  The overall features support a diagnosis of colonic adenocarcinoma with mismatch repair deficient.