FDG PET may be useful for differentiating common enhancing malignant brain tumors, particularly lymphoma versus high-grade glioma and metastatic tumor. FDG PET can provide useful information for distinguishing between lymphoma and other malignant enhancing brain tumors and is recommended when differential diagnoses are difficult to narrow using MRI alone.
Dynamic susceptibility-contrast MR imaging can provide useful hemodynamic information about intraaxial brain tumors that is not provided by standard MR imaging and therefore contributes to the differential diagnosis.
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