Temporal bone venous anomaly of surgical significance.
Variability in the size of the dural sinuses and jugular bulb is not uncommon and usually manifests as a high jugular bulb encroaching upon the floor of the middle ear. A rarer entity is the superior and medial extension of the jugular bulb into the bone of the posterior wall of the internal auditory meatus. We report a case where this anomaly was encountered during acoustic neuroma surgery making exposure of the fundus of the internal auditory meatus technically impossible. The possibility of a communication with the superior petrosal sinus is discussed.
Shotton
J C
JC
Department of Otorhinolaryngology, Kings College Hospital, London.
Ludman
H
H
Cox
T C
TC
D005260:Female; D006801:Humans; D007601:Jugular Veins / Q000002:abnormalities*; D008875:Middle Aged; D009464:Neuroma, Acoustic / Q000000981:diagnostic imaging*; D013701:Temporal Bone / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed