Gamma delta lymphoma: a pictorial review of F-18 fluorodeoxyglucose PET/CT findings and a brief review of the literature

Gamma Delta (gamma delta) T-cell lymphomas are uncommon and aggressive neoplasms originating from the gamma delta receptor-bearing lymphocytes. The most frequent entities include primary hepatosplenic gamma delta T-cell lymphomas, primary cutaneous gamma delta lymphoma, and monomorphic epitheliotropic T-cell lymphoma. F-18 fluorodeoxyglucose (FDG) PET/CT is an important modality in the staging of Hodgkin's and various non-Hodgkin's lymphoma. However, literature is scare on imaging findings of gamma delta lymphoma on F-18 FDG PET/CT. In this review, we discuss briefly the clinical and biological features and present the spectrum of F-18 FDG PET/CT findings of gamma delta lymphoma.