Ekawut ChankaewBunpot SitthinamsuwanPrajak SrirabheebhatThaweesak AurboonyawatSarun Nunta-AreeMahidol University2018-06-112018-06-112012-12-01Journal of the Medical Association of Thailand. Vol.95, No.12 (2012), 1613-1618012522082-s2.0-84871700474https://repository.li.mahidol.ac.th/handle/20.500.14594/14452De 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.Mahidol UniversityMedicineArticleSCOPUS