Renal mucosa-associated lymphoid tissue lymphoma: a case report and literature review

Background: Renal MALT lymphoma is a rare entity with few reports in the literature. These neoplasms arise at extranodal sites, usually related with chronic inflammation due to infection or autoimmune disorder and share histologic and immunophenotypic features. To date, 10 cases of renal MALT lymphoma have been described. Case presentation: We present a case of a MALT renal lymphoma in a 69-year-old woman with suspected preoperative diagnosis of renal cell carcinoma (papillary vs chromophobe type), RENAL SCORE 9p. We performed a retroperitoneal laparoscopic left partial nephrectomy guided by intraoperative ultrasound. Conclusion: There are few reports in the literature regarding renal MALT lymphoma. We consider that this might be considered as a differential diagnosis of renal mass.