De novo aneurysm on the posterior cerebral artery: a case report and literature review.

Ekawut Chankaew, Bunpot Sitthinamsuwan, Prajak Srirabheebhat, Thaweesak Aurboonyawat, Sarun Nunta-aree

Division of Neurosurgery, Department of Surgery, Faculty of Medicine SirirajHospital, Mahidol University, Bangkok, Thailand.

Journal of the Medical Association of Thailand = Chotmaihet thangphaet 2012 Dec

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De novo aneurysm formation is a rare entity of cerebral aneurysms. The authors describe a 19-year-old man presenting with spontaneous intracerebral hemorrhage of unknown etiology. The initial cerebral angiography revealed no identifiable vascular lesion. A few weeks following a surgical evacuation of the hematoma, a tiny saccular aneurysm was incidentally found on the distal posterior cerebral artery (PCA) remote from the site of the primary ictus. Several rationales indicated that it was compatible with a cerebral aneurysm of infective etiology. The aneurysm was successfully treated by antibiotic therapy alone. To the authors' knowledge, de novo aneurysm on the PCA has rarely been reported.

Citation

Ekawut Chankaew, Bunpot Sitthinamsuwan, Prajak Srirabheebhat, Thaweesak Aurboonyawat, Sarun Nunta-aree. De novo aneurysm on the posterior cerebral artery: a case report and literature review. Journal of the Medical Association of Thailand = Chotmaihet thangphaet. 2012 Dec;95(12):1613-8