Adrenal gland - Adrenocortical adenoma showing diffuse strong Melan A+ positivity.
Adrenal gland - Adrenocortical carcinoma with diffuse Melan A+ positivity of all tumor cells.
Breast - Breast cancer of no special type showing diffuse weak Melan A+ immunostaining.
Colon - Melan A+ negative colorectal adenocarcinoma.
Kidney - Angiomyolipoma with a strong diffuse Melan A+ immunostaining.
Kidney - Angiomyolipoma with a weak to moderate Melan A+ immunostaining also involving fat cells.
Kidney - Angiomyolipoma with a weak to moderate Melan A+ positivity.
Kidney - Oncocytoma with moderate Melan A+ immunostaining of tumor cells.
Pancreas - Melan A+ negative ductal adenocarcinoma.
Pharynx - Squamous cell carcinoma showing diffuse weak Melan A+ immunostaining.
Prostate - Melan A+ negative prostatic adenocarcinoma (Gleason 3+3=6).
Skin - Malignant melanoma displaying only a very faint (equivocal) Melan A+ immunostaining in about 50% of tumor cells.
Skin - Malignant melanoma showing diffuse strong Melan A+ positivity.
Skin - Malignant melanoma showing Melan A+ immunostaining of variable intensity in tumor cells (mosaic pattern).
Skin - Malignant melanoma with strong Melan A+ positivity in all tumor cells.
Skin - Melan A+ negative basal cell carcinoma containing numerous (non-neoplastic) melanocytes.
Skin - Melan A+ negative squamous cell carcinoma.
Urinary bladder - Muscle-invasive urinary bladder cancer showing weak to moderate Melan A+ immunostaining.
Urinary bladder - Muscle-invasive urinary bladder cancer with focal weak Melan A+ positivity.