Persistent hypoglossal artery with hypoplasia of the vertebral and posterior communicating arteries.
We observed a rare case of the right persistent hypoglossal artery (PHA) in the posterior cranial fossa of a deceased 74-year-old Japanese man who did not have any clinical manifestations related to this anomaly when alive. The large-sized PHA originating from the cervical internal carotid artery passed through the hypoglossal canal together with the hypoglossal nerve and reached the posterior cranial fossa to anastomose the basilar artery. In addition, the ipsilateral vertebral artery and bilateral posterior communicating arteries were hypoplastic. Here, we discuss the developmental mechanisms underlying the formation of the PHA and the spectrum of diseases related to its presence.
Terayama
Ryuji
R
Department of Oral Function and Anatomy, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Okayama 700-8525, Japan. ryujit@md.okayama-u.ac.jp
Toyokuni
Yuka
Y
Nakagawa
Shinsuke
S
Nakatsuji
Kazuki
K
Nakama
Hitomi
H
Yamaai
Tomoichiro
T
Ichikawa
Hiroyuki
H
Sugimoto
Tomosada
T
D000368:Aged; D001158:Arteries / Q000002:abnormalities*; D001488:Basilar Artery / Q000002:abnormalities; D002343:Carotid Artery, Internal / Q000002:abnormalities*; D006801:Humans; D007002:Hypoglossal Nerve / Q000098:blood supply*; D008297:Male; D020769:Posterior Cerebral Artery / Q000002:abnormalities*; D014711:Vertebral Artery / Q000002:abnormalities*