[Completely thrombosed large aneurysm of the distal middle cerebral artery: a case report].
A 19 year old male was admitted for evaluation after a seizure. Physical and neurological examination was normal. CT demonstrated an enlarged, high density mass in the right parietal lobe. MRI showed a homogeneous high intensity T1 weighted mass, surrounded by a low intensity T2 weighted rim in the right parietal lobe. Angiography did not show any abnormal findings. A diagnosis of cavernous angioma with primary bleeding in the subcortical region of the right parietal lobe was made after radiological examination. Histological examination showed a completely thrombosed aneurysm. The mechanism of the complete thrombosis and the growth of this large aneurysm and the shortcomings of radiological examination are discussed.
Oka
H
H
Department of Neurosurgery, Kitasato University School of Medicine.
Kurata
A
A
Miyasaka
Y
Y
Kobayashi
I
I
Oomomo
T
T
Yada
K
K
Morii
S
S
Kan
S
S
D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D002532:Intracranial Aneurysm / Q000175:diagnosis* / Q000601:surgery; D002542:Intracranial Embolism and Thrombosis / Q000175:diagnosis* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed