title: Mucocele of the sphenoid sinus presenting as spontaneous pneumocephalus.
abstract: A 60 year old woman presented with headaches and a destructive lesion in the sella turcica. She refused treatment but returned seven years later with a spontaneous pneumocephalus and dementia. A mucocele of the sphenoid sinus was discovered. Her symptoms resolved after removal of the mucocele and obliteration of the sphenoid sinus.
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008875:Middle Aged; D009078:Mucocele / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D011007:Pneumocephalus / Q000209:etiology*; D011859:Radiography; D013101:Sphenoid Sinus / Q000000981:diagnostic imaging / Q000473:pathology