Chemotherapy-induced pericarditis on F-18 FDG positron emission tomography scan.

F-18 FDG positron emission tomography (PET) is a highly valuable imaging tool in evaluation and follow up of lymphoma and many other malignancies. Constrictive or effusive constrictive pericarditis is an uncommon complication of chemotherapy. The authors report a case in which pericardial FDG uptake was seen on a whole-body PET scan performed for posttreatment follow-up evaluation for a mantle cell lymphoma.