The "empty" sella turcica--a manifestation of the intrasellar subarachnoid space.
D000328:Adult; D014695:Cerebral Ventriculography; D002555:Cerebrospinal Fluid; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010845:Obesity Hypoventilation Syndrome; D010902:Pituitary Gland / Q000000981:diagnostic imaging* / Q000473:pathology; D011312:Pressure; D012658:Sella Turcica / Q000000981:diagnostic imaging*; D013346:Subarachnoid Space / Q000000981:diagnostic imaging*