Diffusely enlarged nonhydronephrotic kidneys on ultrasound and computer-tomographic examination in a case of progressive preterminal renal insufficiency were very suggestive of extensive lymphomatous infiltration. Diffuse infiltration of the kidney by centrocytic/centroblastic non-Hodgkin lymphoma was confirmed upon renal biopsy. No other localizations of lymphoma could be found. After four courses of CHOP chemotherapy there was a complete remission of this primary renal non-Hodgkin lymphoma, with complete recovery of renal function.
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Gelder et al. (2008) studied this question.