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Figure 5 | Diagnostic Pathology

Figure 5

From: Clinicopathological features and the value of differential Cytokeratin 7 and 20 expression in resolving diagnostic dilemmas of ovarian involvement by colorectal adenocarcinoma and vice-versa

Figure 5

Case of a papillary serouscystadenocarcinoma metastasizing to the sigmoid colon. A. Clusters of tumor cells invading the lamina propria and the submucosa. Overlying colonic mucosa is normal. H&E × 200. B. Lymphovascular emboli in the submucosa. H&E × 400. C. IHC results. CK 7 highlighting the tumor cells. DAB × 100. Inset showing higher magnification of CK7 positive tumor cells. DAB × 200. D. Negative CK20. Superficial colonic mucosa showing positivity was an internal positive control. DAB × 100.

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Diagnostic Pathology

ISSN: 1746-1596

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