Abstract
Follicular lymphoma (FL) is clinically classified as a common type of indolent non-Hodgkin's lymphoma. FL is generally indolent and has good prognosis, it can involve a variety of extranodal sites, including the gastrointestinal tract, bone marrow, spleen, liver, skin, and other organs. Secondary involvement of pancreas in FL is rare. We report the case of a patient with FL whose initial fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) revealed subdiaphragmatic involvement with isolated diffuse pancreatic hypermetabolism. Uncovering such rare site highlights the role of FDG-PET/CT in staging of lymphomas.