Complete remission after glucocorticoid therapy in a patient with primary hypophysitis.

Summary: Primary hypophysitis is a rare disease that may have variable clinical presentations. The main treatment options are clinical observation, immunosuppressive drugs, and surgery. Glucocorticoids are used as first-line medical therapy; however, non-responsiveness and recurrences are the major problems. We present a 30-year-old male patient who had an excellent radiologic response to a single course of glucocorticoids. The patient presented with malaise and severe headaches of acute onset. Cranial MRI revealed a pituitary mass compressing the optic chiasm. Hormonal evaluation studies were consistent with anterior pituitary hormone dysfunction except for the growth hormone axis. There was a mild compression on the optic chiasm in the pituitary MRI. The patient was started on methylprednisolone therapy at a dose of 80 mg/day. The pituitary MRI revealed complete regression of the mass after 2 months, and there was a complete recovery of pituitary functions after 6 months. There is no consensus on the optimal dose and duration of glucocorticoid therapy for primary hypophysitis in the literature. We report that steroid therapy, even in lower doses, might be effective in mild-to-moderate cases. Learning points: Primary hypophysitis is a rare disease with a varied clinical course, and hence the treatment strategies should be individualized. There is no consensus on the optimal dose and duration of glucocorticoid therapy. Glucocorticoid therapy may induce complete remission in some patients, especially with a mild-to-moderate disease course and during the acute phase of the disease.