An octreoscan is a scinitigraphic study that uses 111In labeled octreotide which is a somatostatin analog. It is particularly useful for assessment of neuroendocrine tumors.
- carcinoid tumor
- small cell lung cancer
- pituitary adenoma
- medullary thyroid carcinoma
- pancreatic islet cell tumor
Certain non-neuroendocrine tumors can also show uptake in an octreoscan. Examples include:
Also, certain autoimmune or granulomatous diseases may also occasionally show uptake with octreotide.