Primary mucosa‐associated lymphoid tissue‐type lymphoma arising in the kidney

Abstract: We report a case of primary low‐grade lymphoma of mucosa‐associated lymphoid tissue (MALT) arising from the kidney in a 30‐year‐old man with an abdominal mass in the right flank detected by ultrasonography. Radical nephrectomy was performed under a preliminary diagnosis of renal cell carcinoma. The final histological diagnosis was MALT‐type lymphoma. To the best of our knowledge, only five reports of primary MALT‐type lymphoma in the kidney have been published in the literature so far. All cases were surgically treated and only one case went on to chemotherapy postoperatively.