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Granular cell tumor of the pituitary stalk. Case report
C Lafitte1, B Aesch, F Henry-Lebras
1Department of Neurosciences, C.H.U. Bretonneau, Tours, France.
Journal of Neurosurgery
|June 1, 1994
Abstract:
The case is described of a granular cell tumor of the pituitary stalk in a 40-year-old woman with secondary amenorrhea. A computerized tomography scan showed a large contrast-enhancing mass, and T1-weighted magnetic resonance images demonstrated a tumor isointense to the brain parenchyma with nonhomogeneous enhancement after intravenous administration of gadolinium diethylenetriamine penta-acetic acid. Histopathological examination, especially immunocytochemical and electron microscopic studies, showed elements supporting an astrocytic origin for this type of tumor, a hypothesis advanced by many authors but still controversial.