Bilateral primary renal lymphoma.

The frequency of immunodeficiency syndromes and patients at risk for these syndromes is increasing. These patients can come to their family physicians with unusual infections and neoplasms. The following is a case of an unusual disease, primary renal lymphoma, in a patient with a history of drug abuse and chronic hepatitis. Primary renal lymphoma, a lymphomatous involvement of the kidney with no detectable lymphoma elsewhere in the body, is unusual in that the renal parenchyma is normally devoid of lymphoid tissue. We describe a case of bilateral primary renal lymphoma in which the patient experienced acute renal failure. In addition, we briefly review the cases described in the literature.