Thyroid: Anaplastic thyroid cancer with intense p16 immunostaining in tumor cells.

Uterus: Leiomyosarcoma with strong p16 immunostaining.

Soft tissues: Liposarcoma showing strong p16 immunostaining.

Soft tissues: Liposarcoma showing weak to moderate p16 positivity.

Skin: Malignant melanoma showing strong p16 immunostaining in tumor cells.

Skin: Merkel cell carcinoma of the skin with strong p16 positivity.

Thyroid: Moderate to strong p16 positivity in an anaplastic thyroid cancer.

Urinary bladder: Muscle invasive urothelial carcinoma of the urinary bladder showing moderate to strong p16 immunostaining.

Oral cavity: p16 positive squamous cell carcinoma.

Ovary: Serous carcinoma (high grade) with p16 immunostaining of variable intensity in all tumor cells.

Uterus: Squamous cell carcinoma of the cervix (HPV positive) with strong p16 immunostaining.

Uterus: Strong p16 expression in all cells of a leiomyosarcoma.

Ovary: Strong p16 immunostaining of a serous high-grade carcinoma.

Urinary bladder: Strong p16 positivity in all cells of a small cell carcinoma.