Prostate - Adenocarcinoma (Gleason 4+4) with focal Cytokeratin 7 positivity.

Stomach - Gastric adenocarcinoma (intestinal type) with strong Cytokeratin 7 immunostaining.

Breast - Invasive breast cancer of no special type with strong Cytokeratin 7 immunostaining in all tumor cells.

Kidney - Clear cell renal cell carcinoma with weak focal Cytokeratin 7 positivity.

Kidney - Cytokeratin 7 negative clear cell renal cell carcinoma.

Colon - Cytokeratin 7 negative colorectal adenocarcinoma.

Stomach - Cytokeratin 7 positive gastric adenocarcinoma (diffuse type).

Breast - Strong Cytokeratin 7 expression in a lobular breast cancer.

Liver - Strong Cytokeratin 7 immunostaining of all cells of a cholangiocellular carcinoma.

Kidney - Strong Cytokeratin 7 immunostaining of all cells of a chromophobe carcinoma.

Thyroid - Strong Cytokeratin 7 positivity in a follicular carcinoma.