Breast - Adenoid-cystic breast cancer with strong membranous mesothelin immunostaining in a subset of cells.
Colon - Adenocarcinoma of the colon with weak to moderate, cytoplasmic and membranous mesothelin immunostaining.
Kidney - Clear cell renal cell carcinoma with moderate to strong cytoplasmic mesothelin immunostaining.
Larynx - Squamous cell carcinoma of the larynx with moderate membranous mesothelin immunostaining in a small fraction of tumor cells.
Larynx - Squamous cell carcinoma of the larynx with strong membranous and cytoplasmic mesothelin immunostaining in the vast majority of cells.
Liver - Cholangiocellular carcinoma with cytoplasmic and membranous mesothelin positivity.
Ovary - Intense, predominantly cytoplasmic mesothelin staining in a serous ovarian cancer.
Ovary - Mesothelin negative endometroid ovarian cancer.
Ovary - Strong, predominantly membranous mesothelin staining in an endometroid ovarian cancer.
Pancreas - Strong cytoplasmic and membranous mesothelin immunostaining of all cells of an adenocarcinoma of the pancreas.
Pancreas - Strong cytoplasmic and membranous mesothelin immunostaining with apical predominance in an adenocarcinoma of the pancreas.
Pancreas - Weak to moderate cytoplasmic and membranous mesothelin positivity with apical predominance in an adenocarcinoma of the pancreas.
Pleura - Malignant mesothelioma with strong membranous and cytoplasmic mesothelin immunostaining in epithelial and mesenchymal cells.
Stomach - Strong, predominantly cytoplasmic mesothelin immunostaining in a stomach cancer with diffuse growth pattern.