Isolated pituitary sarcoidosis simulating macro adenoma

This is a 49 years old Yemeni female patient, presented to out patient clinic with a history of headache of 3 months duration with clinical features and investigation of hypothyroidism and hyperprolactinemia. Her magnetic resonance imaging of the brain showed macroadenoma. She was subjected to transphenoidal pituitary adenoma resection and histopathological study suggested neurosarcoidosis. Further evaluation supported that diagnosis. She was treated with prednisolone 40mg/day in addition to thyroxine 50 micro gm/day, and on follow up later on prednisolone was reduced to 5mg/day along with azathioprin l00 mg / day and she progressed well