Table 2.
Immunohistochemical Staining of Normal and Neoplastic Human Endocrine Tissues for Myosin XVA
| Normal cell type | n* | Neuroendocrine tumors | n* |
|---|---|---|---|
| Pituitary† | 4 | Pituitary adenoma† | 22 |
| Adrenal medulla | 3 | Parathyroid adenoma | 3 |
| Pancreatic islet | 5 | Paraganglioma | 5 |
| Parathyroid | 3 | Carcinoid tumors–small intestine | 3 |
| Endocrine cells, small intestine | 3 | Lung small cell carcinoma | 2 |
| Endocrine cells, stomach | 2 | Islet cell tumor | 4 |
| Paraganglionic tissue | 2 | Medullary thyroid carcinoma | 4 |
| Lung carcinoid | 2 | ||
| Merkel cell carcinoma | 2 |
*n, Number of cases examined. These cases were all positive for myosin XVA by immunohistochemistry.
†Data for normal pituitary and pituitary adenomas are summarized in greater detail in Table 1.