Primary isolated extramedullary plasmacytoma of mesentry: a rare case report

Extramedullary plasmacytoma (EMP) is an uncommon entity that most commonly involves nasopharynx and upper repository tract. Involvement of GIT occurs in approximate 10% of cases. According to WHO plasma cell tumors have been classified into two main groups: Multiple myeloma and plasmacytoma. Plasmacytoma includes solitary plasmacytoma of bone and solitary extramedullary plasmacytoma. EMP can be either primary without evidence of bone marrow involvement or may occur simultaneously with multiple myeloma representing extramedullary spread of the disease. It may occur in association with multiple myeloma and it may precede, accompany or follow the onset of multiple myeloma. Diagnosis of primary EMP requires the exclusion of associated multiple myeloma as shown by negative Bence Jones Proteins in urine, normal serum electrophoresis, normal bone marrow biopsy, normal skeletal survey and normal calcium levels. Here we present a case of 55-year male who came to Nephrology Department for urinary tract infection and pain abdomen. Patient was referred to Radiology for ultrasonography which revealed bilateral renal parenchymal disease with a well-defined mass in the mesentry which was further confirmed on computed tomography. Patient was surgically operated and diagnosis of primary EMP of mesentry was made on histopathological examination. Only three cases have been reported so far in the literature.