Ossified peripheral middle cerebral artery aneurysm in a 30-year-old man.
A 30-year-old man presented with a history of several convulsive episodes. A CT scan showed a calcified focus in the right temporal lobe. Cerebral angiography yielded no abnormal findings. At craniotomy, the M3 portion of the middle cerebral artery was found to terminate with a blind end at the junction with the calcified mass. A pathological diagnosis of an ossified cerebral aneurysm was made. Calcified cerebral aneurysms are not rare; they are thought to be the result of intra-aneurysmal thrombosis or degenerative changes in the aneurysmal wall. However, complete mural ossification of a cerebral aneurysm is seldom seen, and ossified peripheral middle cerebral artery aneurysms are extremely rare in young individuals. The ossified aneurysm that we report developed over a prolonged period and may have arisen during childhood.
Department of Neurosurgery, Kanazawa University, Takara-machi, Kanazawa, Japan. yahayashi@ns.m.kanazawa-u.ac.jp
Yasuhiko
Y
Hayashi
Hiroshi
H
Shima
Masashi
M
Kinoshita
Mitsutoshi
M
Nakada
Katsuyoshi
K
Miyashita
Jun-ichiro
J
Hamada
D000328:Adult; D001921:Brain / Q000098:blood supply / Q000000981:diagnostic imaging / Q000601:surgery; D002533:Cerebral Angiography; D003399:Craniotomy; D003937:Diagnosis, Differential; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D009999:Ossification, Heterotopic / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed