A large sellar granular cell tumor in a 21-year-old woman.

We report here the case of a 21-year-old woman with a large sellar tumor, extending to the suprasellar area associated with growth hormone deficiency, hypogonadism, hypocorticism, and hyperprolactinemia. Transsphenoidal surgery was performed, and histologic, immunohistochemical, and electron microscopic study lead to the diagnosis of granular cell tumor. These tumors are, in most cases, very small and are found incidentally at autopsy of older patients. Our case is exceptional because the tumor developed in a young woman, extended to the suprasellar region, and caused clinical symptoms.