Breast - Invasive breast cancer of no special type (NST) showing moderate to strong CK15 immunostaining in tumor cells.
Breast - Strong CK15 immunostaining of all cells of an invasive lobular breast cancer.
Breast - Weak to moderate CK15 immunostaining in the majority of cells of an invasive breast cancer of no special type (NST).
Esophagus - Squamous cell carcinoma showing strong CK15 immunostaining.
Kidney - Cytokeratin 15 negative clear cell renal cell carcinoma.
Liver - Cholangiocellular carcinoma showing weak to moderate CK15 immunostaining in most tumor cells.
Lung - Moderate to strong CK15 immunostaining in a pulmonary adenocarcinoma.
Lung - Squamous cell carcinoma showing strong CK15 immunostaining.
Oral cavity - Squamous cell carcinoma with strong CK15 staining.
Ovary - Brenner tumor showing moderate Cytokertin 15 staining in tumor cells.
Pancreas - Cytokeratin 15 negative neuroendocrine tumor.
Prostate - Cytokeratin 15 negative prostatic adenocarcinoma (Gleason 3+3=6). Few normal glands show staining of basal cells.
Skin - Basal cell carcinoma with strong CK15 immunostaining.
Skin - Cytokeratin 15 negative Merkel cell carcinoma.
Skin - Squamous cell carcinoma showing strong CK15 immunostaining.
Stomach- Cytokeratin negative gastric adenocarcinoma (intestinal type).
Testis - Cytokeratin 15 negative seminoma.
Urinary bladder - Strong Cytokeratin 15 positivity in a muscle-invasive urothelial carcinoma.
Vagina - Squamous cell carcinoma showing strong CK15 immunostaining.
Vulva - Squamous cell carcinoma with strong CK15 positivity.