[Renal malignant lymphoma: report of a patient surviving 17 months without recurrence and review of 43 Japanese cases].

A case of renal malignant lymphoma is reported. A 74-year-old man was admitted to our hospital on September 8, 1995, complainning of right flank pain, abdominal mass, and anorexia for two months. Physical examination revealed an enlarged right axillary lymph node and abdominal mass of child's head size. Computerized tomography showed a tumor (11 x 7 cm) encompassing the right kidney parenchym, and enlarged paraaprtoc lymph nodes with invasion of the left iliac creat. Transcutaneous echo-guided needle biopsy revealed that the tumor was non-Hodgkin's malignant lymphoma, diffuse large cell type, positive for B cell marker. The patient was treated with full dose of CHOP regimen. However, adriamycin was replaced with pirarubicin and the dose of the other drugs were reduced for the subsequent 4 courses because of severe leukocytopenia, thrombocytopenia, hepatotoxicity, and alopecia after the first course of the treatment. The patient showed complete remission and discharged on March 12, 1996. He, after 17 months, has no signs of recurrence. We reviewed 43 Japanese cases previously reported as renal malignant lymphoma. It is increasing in Japan especially in elderly. The 2-year survival is 26.6%.