%0 Journal Article
%T Pseudoaneurysm at M3 of the middle cerebral artery: Morphological changes on serial radiological examinations
%A Hiroshi Shima
%A Issei Fukui
%A Kentaro Mori
%A Kunio Yanagimoto
%A Motohiro Nomura
%A Naoki Muramatsu
%J Archive of "The Neuroradiology Journal".
%D 2018
%R 10.1177/1971400917741904
%X A 20-year-old man presented with consciousness disturbance and hemiparesis, and computed tomography demonstrated subarachnoid and intracerebral hemorrhage. Angiography on admission demonstrated a slight irregularity of the middle cerebral artery (MCA) branch. Angiography on the 12th day showed a suspicious lesion at M3 of the left MCA. Angiography performed 24 days after the onset disclosed an aneurysm at M3. The aneurysm was trapped and resected after superficial temporal artery-MCA bypass. Pathological examinations revealed that this distal aneurysm was a pseudoaneurysm without vascular components in its dome. Although a lesion that may cause subarachnoid or intracerebral hemorrhage was not detected on the initial angiography, repeated examinations revealed the atypical vascular lesion in distal MCA
%K Middle cerebral artery
%K M3
%K distal
%K pseudoaneurysm
%K morphological change
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5958499/