Renal Lymphoma Mimicking a Retroperitoneal Hematoma

Abstract

We report the case of a 65-year-old female with an atypical presentation of renal lymphoma at computed tomography (CT), which was initially misinterpreted as a retroperitoneal hematoma. This case highlights the importance to keep a high level of suspicion in order to make a prompt diagnosis since treatment strategies differ significantly.

Primary lymphoma of the kidney

“…33 Primary renal lymphoma can be also misdiagnosed as retroperitoneal hematoma. 34 The pathological differential diagnosis of PRL depends on the lymphoma type. Renal Burkitt's lymphoma and lymphoblastic lymphoma must be differentiated from other small, blue, and round-cell tumors )namely, Ewing sarcoma/primitive neuroectodermal tumor, synovial sarcoma, Wilm's tumor, neuroblastoma, and small cell neuroendocrine tumor(.…”