High grade MALT-lymphoma of the breast

A 65-year-old woman presented with a rapidly growing breast tumor, initiall y diagnosed as a carcinoma. Histology showed a breast lymphoma of high grad e MALT-type. A lymphoma should always be considered in the differential dia gnosis of a breast tumor, because it needs a different work-up and treatmen t. The subgroup of NHL of Mucosa-Associated-Lymphoid-Tissue origin has diff erent clinical behaviour, as illustrated in this report. (C) 1999 Elsevier Science B.V. All rights reserved.