[Primary breast lymphoma. A case report].

The authors report a case of a primary breast lymphoma (P.B.L.). A 23 year old female patient presented with a primary lymphoma of the left breast, pleural effusion and a biological syndrome of spontaneous tumor lysis. She had salvage mastectomy then chemotherapy. The issue was rapidly fatal, the day after the induction of chemotherapy. P.B.L. are uncommon. Less than 300 cases are found in the literature. These lymphomas are classified in 2 types: The first, the Burkitt type lymphoma, usually bilateral, rapidly fatal, and affects pregnant or lactating women. The second, unilateral, afflict patients at any age.