Mammographic, ultrasonographic and MR imaging features in a patient with non-Hodgkin's lymphoma are reported in this paper. Mammography and ultrasonography revealed ill-defined, round masses with skin thickening. Precontrast TlW images demonstrated multiple well-defined. hypointense masses. which showed rapid rim enhancement in dynamic postcontrast sequence. The enhancement rate indicated malignant pathology. MR imaging demonstrated the extent of involvement more apparently than conventional imaging. Although, riot pathognomonic for lymphoma, MR imaging may be helpful in evaluation and follow-up of breast masses in patients with previous lymphoma. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.