Abstract
In this case report, we define THE MR characteristics of a gliosarcoma surgically removed from the left cerebral hemisphere of a 67-year-old man who presented with right hemiparesis and headache. The tumor was located in the gray-white matter interface abutting the dural surface. It showed slightly high signal on T2-weighted images with hemorrhagic and necrotic components and irregular ring-like enhancement on post-contrast T1-weighted images. Apparent diffusion coefficient of the tumor was measured as 1.09 × 10−3 cm2/s. Tumoral and peritumoral cerebral blood volume (rCBV) ratios were calculated as 8.4 and 2.2, and choline/creatine ratios were 1.78 and 1.11 respectively. The tumor primarily compromised the secondary motor area and affected the left primary motor area on BOLD images. Although MR characteristics of gliosarcoma did not allow an exact differential diagnosis, they were very useful in surgical planning to decrease post-treatment morbidity.
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