Pituicytoma associated with Cushing's disease: a case report and literature review.

Pituicytoma is a rare tumor that has been recently recognized and described, where only few reported cases of pituicytoma associated with Cushing's disease. We describe a case of a 47 years old female with a history of high cortisol levels and a diagnosis of Cushing's disease was made. Brain magnetic resonance imaging showed lesion in pituitary gland compatible with microadenoma and tumor resection was carried out. The histopathological findings were of a pituicytoma with positive thyroid transcription factor-1 immunostain.