Spontaneous ovarian hyperstimulation caused by a follicle-stimulating hormone-secreting pituitary adenoma.

Objective: To report a case of spontaneous ovarian hyperstimulation resulting from an FSH-secreting pituitary adenoma.

Design: Case report.

Setting: University hospital.

Patient(s): A 29-year-old previously healthy, nulligravid woman.

Intervention(s): Transphenoidal resection of the adenoma.

Main Outcome Measure(s): Clinical remission.

Result(s): After transphenoidal resection of the adenoma, the patient had an uneventful postoperative recovery with complete resolution of ovarian hyperstimulation and associated symptoms. Postoperative magnetic resonance imaging demonstrated residual tumor within the cavernous sinus.

Conclusion(s): Follicle-stimulating hormone-secreting pituitary adenoma may present as acute spontaneous ovarian hyperstimulation.