A Case of Hypopituitarism Due to Granulomatous and Lymphocytic Adenohypophysitis with Minimal Pituitary Enlargement: A Possible Variant of Lymphocytic Adenohypophysitis.

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Abstract
A 47-year-old woman complaining of cold intolerance, general weaknes and amenorrhea of 10 months duration was diagnosed, by endocrine examinations, as having panhypopituitarism. Skull x-ray films revealed a slightly enlarged sella with double floor sign and MRI showed a low intensity mass in the pituitary. Transsphenoidal exploration disclosed a degenerated pituitary gland, the histology of which showed a granulomatous lesion with moderate lymphocytic incfiltration but containing no multinuclear giant cells. No caseous necrosis, causative microorganisms, or BCG antigen were noted. The present case is considered a variant form of lymphocytic adenohypophysitis.