Primary extra-nodal indolent B-cell lymphoma (small lymphocytic lymphoma/chronic lymphocytic leukemia) of retroperitoneum

Abstract

Primary retroperitoneal malignant lymphoma is rare, and primary retroperitoneal indolent B-cell lymphoma has not been reported. A 64-year-old woman presented anuria. Imaging techniques showed large retroperitoneal mass, and biopsies from it revealed non-Hodgkin indolent B-cell lymphoma (small lymphocytic lymphoma/chronic lymphocytic lymphoma). The tumor appeared retroperitoneal primary and extra-nodal in locations.