title: Air in the ventricles: an unusual complication of nasal polypectomy.
mesh_terms: D000328:Adult; D014695:Cerebral Ventriculography; D006801:Humans; D008297:Male; D009298:Nasal Polyps / Q000601:surgery*; D011007:Pneumocephalus / Q000000981:diagnostic imaging / Q000209:etiology*; D011183:Postoperative Complications / Q000000981:diagnostic imaging / Q000209:etiology*; D013101:Sphenoid Sinus / Q000000981:diagnostic imaging