Hypersomnia, unspecified [G47.10], Reason for Study: ^Reason: Evaluate for hypothalamic lesion History: Excessive daytime sleepiness Brain MRINo evidence of acute ischemic or hemorrhagic lesion on the scan.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.Pituitary MRIThe pituitary gland is normal in size, morphology, signal intensity and enhancement. There is no hypo-enhancement or signal abnormality suggestive of neoplasm. The pituitary stalk is located at midline without deviation, and is normal in caliber, signal intensity and enhancement. The suprasellar cistern, optic chiasm, hypothalamus, and cavernous sinuses are unremarkable. The orbits and contents are unremarkable. A small high signal intensity on the left cerebral peduncle (series 901, image 17) is likely represent prominent CSF space.
1. Normal brain MRI2. Normal pituitary MRI.