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Journal of Korean Neurosurgical Society > Volume 22(1); 1993 > Article
Journal of Korean Neurosurgical Society 1993;22(1): 133-138.
A Case Report of Giant Posterior Inferior Cerebellar Artery Aneurysm Simulating a Posterior Fossa Tumor.
Dong Ik Shin, Young Cho Koh, Maeng Ki Cho, Do Yun Hwang
Department of Neurosurgery, College of Medicine, Hallym University, Seoul, Korea.
A 24-year-old female patient presented with a midline extra-axial posterior fossa lesion. We failed to suspect this lesion could be a giant thrombosed aneurysm of PICA(posteior inferior cerebellar artery) preoperatively, and didn't perform preoperative angiogram even after rather typical finding of thrombosed giant aneurysm on MRI. We suggest a giant thrombosed aneurysm should be included in the differantial diagnosis of any round extra-axial mass lesion in the skull base.
Key Words: Skull base lesion; Extraaxial mass; Thrombosed giant aneurysm; PICA
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