Adrenal gland – TdT negative pheochromocytoma.

Breast- TdT negative invasive breast cancer of no special type (NST).

Colon- TdT negative colorectal adenocarcinoma.

Kidney- TdT negative clear cell renal cell carcinoma.

Kidney- TdT negative papillary renal cell carcinoma.

Liver- TdT negative cholangiocellular carcinoma.

Liver- TdT negative hepatocellular carcinoma.

Lymph node- TdT negative diffuse large B-cell lymphoma.

Lymph node- TdT negative Hodgkin's lymphoma.

Ovary- TdT negative high-grade serous carcinoma

Pancreas- TdT negative neuroendocrine tumor.

Prostate- TdT negative adenocarcinoma (Gleason 3+3=6).

Salivary gland- TdT negative Warthin tumor.

Skin- Merkel cell carcinoma containing a small fraction of tumor cells with strong TdT immunostaining.

Skin- Merkel cell carcinoma showing a moderate to strong TdT immunostaining in all tumor cells.

Skin- Merkel cell carcinoma showing a weak to moderate TdT immunostaining in all tumor cells.

Skin- TdT negative Merkel cell carcinoma.

Stomach- TdT negative gastric adenocarcinoma (diffuse type).

Stomach- TdT negative gastric adenocarcinoma (intestinal type).

Stomach- TdT negative gastrointestinal stromal tumor (GIST).

Testis- TdT negative seminoma.

Thymus- Strong TdT positivity in a thymoma.

Thymus- Thymoma showing strong TdT expression in thymocytes.

Thyroid- TdT negative medullary carcinoma.

Thyroid- TdT negative papillary carcinoma.

Urinary bladder- TdT negative muscle-invasive urothelial carcinoma.

Uterus- TdT negative cervical squamous cell carcinoma.

Uterus- TdT negative endometroid endometrium carcinoma.

Uterus- TdT negative leiomyosarcoma.