Breast- Invasive lobular breast cancer exhibiting a strong Ku80 immunostaining of tumor cells.

Colon- Colorectal adenocarcinoma showing a strong Ku80 positivity of all tumor cells.

Esophagus- Squamous cell carcinoma with reduced Ku80 staining of tumor cells as compared to stroma cells.

Kidney- Papillary renal cell carcinoma showing a strong Ku80 staining of tumor cells.

Liver- Hepatocellular carcinoma with strong Ku80 positivity of tumor cells.

Lung- Malignant mesothelioma with only weak and fokal Ku80 staining of tumor cells while the staining is more intense in inflammatory cells.

Lymph node- Diffuse large B-cell lymphoma showing a strong Ku80 immunostaining of tumor cells.

Lymph node- Hodgkin's lymphoma with strong Ku80 immunostaining of tumor cells and of associated inflammatory cells.

Ovary- Clear cell carcinoma with moderate Ku80 immunostaining of tumor cells and associated stroma cells.

Ovary- Mucinous carcinoma with strong Ku80 immunostaining of tumor cells.

Pancreas- Neuroendocrine tumor with intense Ku80 positivity of tumor cells.

Penis- Squamous cell carcinoma with strong Ku80 immunostaining of tumor cells.

Prostate- Adenocarcinoma (Gleason 3+3=6) with strong Ku80 immunostaining of tumor cells.

Prostate- Adenocarcinoma (Gleason 3+3=6) with strong Ku80 positivity of tumor cells

Salivary gland- Warthin tumor depicting a strong Ku80 immunostaining of tumor cells and associated lymphocytes

Skin- Basal cell carcinoma exhibiting a strong Ku80 positivity of tumor cells.

Skin- Merkel cell carcinoma with intense Ku80 immunostaining of all tumor cells

Skin- Merkel cell carcinoma with weaker Ku80 immunostaining of tumor cells than in tumor-associated lymphocytes.

Soft tissue- Leiomyosarcoma with strong Ku80 immunostaining of tumor cells.

Soft tissue- Liposarcoma depicting a strong Ku80 staining of tumor cells.

Stomach- Gastrointestinal stromal tumor (GIST) with strong Ku80 immunostaining of all tumor cells.

Testis- Seminoma with intense Ku80 staining of tumor cells.

Thyroid- Medullary cancer showing strong Ku80 staining of tumor cells.

Thyroid- Papillary cancer exhibiting strong Ku80 staining of tumor cells.