Primary T-cell-rich B-cell lymphoma in the kidney presenting with acute renal failure and a second malignancy

Infiltration of the kidney is commonly found in lymphoma, but acute renal f ailure arising from bilateral renal infiltration is uncommon. Primary renal lymphoma may occur and is usually of B-cell lineage. It is rare for patien ts with lymphoma to develop acute renal failure as their initial clinical p resentation. Recently, an association between primary renal lymphoma and a second primary malignancy has been reported. We describe the first case of a renal T-cell-rich B-cell lymphoma presenting as acute renal failure, whic h was associated with a second primary pulmonary malignancy.