The occurrence of primary non Hodgkin's lymphoma of the liver has rarely been reported in patients with the human immunodeficiency virus infection. We report 3 cases in these patients, presenting with a single liver tumor in 2 cases and multiple tumors in one case. Diagnosis was made by guided-biopsy. Histologically, there was B diffuse large cell lymphoma in 2 cases, and immunoblastic lymphoma in one case. In one case, RNA of Epstein-Barr virus was found in the nucleus of tumor cells by in situ hybridization. No extrahepatic localization was found in any of the 3 cases. One patient died one week after diagnosis, but the 2 other patients were treated by chemotherapy and were still alive 6 and 30 months later. In patients infected by human immunodeficiency virus, primary non Hodgkin's lymphoma should be investigated in case of liver tumor in order to provide early treatment.
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