Primary non-Hodgkin's lymphoma (NHL) of the breast are rare and represent l
ess than 0.6% of all mammary malignancies. Secondary involvement of the bre
ast in patients with diffuse disease occurs more frequently, The radiologic
features of breast lymphoma are nonspecific, and the diagnosis is based on
histologic criteria. We present the MR-imaging features of a case of prima
ry NHL of the breast. (C) 1999 Elsevier Science Inc.