[A rare pelvic tumor].

Splenosis consists of the autotransplantation of splenic tissue following splenic trauma. Unlike hypersplenism, to which it is not related, it does not usually result in any clinical manifestation. It is usually discovered incidentally during operation years after splenic trauma. A benign tumor is found which may or may not be histologically identical with normal splenic tissue, and may or may not be functional. We present a 52-year-old man with a pelvic mass thought to be malignant. Work-up, including CT scan, 99m Tc colloid scintigraphy and 99m Tc-labeled heat-denaturated erythrocyte scintigraphy revealed pelvic splenosis. This case highlights the fact that a pelvic tumor after emergency splenectomy may represent splenosis.