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Fig 2. Infarcts on immediate postoperative MR images are common. These infarcts often demonstrate nodular gadolinium enhancement on subsequent studies, a finding that could be easily confused with tumor. Immediate postoperative DWI (upper left) and apparent diffusion coefficient (upper right) show restricted diffusion (arrows), followed by a 3-month postoperative T2-weighted (lower left) image and a gadolinium-enhanced T1-weighted (lower right) image showing encephalomalacia and enhancement of the infarct. (Reprinted by permission of Lippincott Williams & Wilkins; Clinical and radiographic features of peritumoral infarction following resection of glioblastoma. Neurology 2006;67:1668–70).
