The facial nerve coursing across the promontory with a persistent stapedial artery.
A case of congenital bilateral conductive deafness is described. Some years ago absence of the oval window was found in the left ear. Exploratory tympanotomy of the right ear revealed a large persistent stapedial artery while the facial nerve took its course from the geniculate ganglion straight down across the promontory anteriorly of the stapedial artery.
D000015:Abnormalities, Multiple; D000293:Adolescent; D001158:Arteries / Q000002:abnormalities / Q000196:embryology; D004429:Ear Ossicles / Q000098:blood supply*; D005154:Facial Nerve / Q000002:abnormalities*; D006801:Humans; D008297:Male; D013199:Stapes / Q000098:blood supply*