Secondary amenorrhea and low FSH - assess for pituitary lesion. Pituitary: The pituitary gland demonstrates homogeneous enhancement and is not enlarged. The posterior pituitary bright spot and infundibulum are intact. There is no evidence of sellar or suprasellar lesions. The optic apparatus and cavernous sinuses are intact. Brain: There are subcentimeter nodular foci along the margins of the lateral ventricle with signal characteristics that parallel grey matter. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The There is no abnormal intracranial enhancement. The ventricles are normal in size. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1. No evidence of pituitary lesions.2. Subcentimeter nodular foci along the margins of the lateral ventricles may represent subependymal heterotopia. 