Multiple nodular adenosis concurrent with primary breast lymphoma: pitfall in PET

Abstract

Primary breast lymphoma (PBL) is a rare clinical entity, accounting for less than 0.5% of all breast malignancies and less than 3% of extranodal non-Hodgkin's lymphomas.1 Although no study limited to PBL has yet been reported, 2-fluorine-18-fluoro-2-deoxy-d-glucose (FDG) positron emission tomography (PET) allows accurate detection of non-Hodgkin's lymphoma with 89% sensitivity and 100% specificity,2 both ranging from 80% to 100% in respect of breast carcinoma.3 The role of PET in the diagnosis, initial staging and restaging of lymphoma has been confirmed.