title: X-ray study of the month. Petrous carotid aneurysm.
mesh_terms: D000783:Aneurysm / Q000000981:diagnostic imaging*; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging*; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D003937:Diagnosis, Differential; D006311:Hearing Disorders / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010033:Otitis Media / Q000209:etiology; D010579:Petrous Bone; D011859:Radiography