Accessory spleen in the pelvis diagnosed by Tc-99m phytate scintigraphy

We report a 58-year-old woman with an accessory spleen in the left side of the pelvis. She visited our outpatient clinic complaining of lower abdomina l discomfort. Abdominal ultrasonography revealed a tumor 4 cm in diameter i n the left side of the pelvis. Color Doppler ultrasonography demonstrated p lentiful pulsating blood flow. Magnetic resonance angiography revealed that the blood supply for the tumor was from a branch of the splenic artery. Sc intigraphy with Tc-99m phytate revealed accumulation of radioactivity conco rdant with a mass in the left side of the pelvis, and the spleen was normal ly visualized. These findings suggested that this tumor was an accessory sp leen, and the patient underwent no further invasive procedures.