A case of mesenteric angiosarcoma treated by preoperative embolization followed by surgery

We report a case of primary mesenteric angiosarcoma in a 41-year-old man who presented with no subjective symptoms, but exhibited occult blood in a urine sample obtained during a medical checkup. Imaging revealed a soft mass measuring 16 cm in diameter. The tumor was found to have an abundant blood supply; therefore, feeding arteries except for the superior mesenteric artery were preoperatively embolized using a coil and gel foam. Subsequently, surgery was performed. Histopathological examination of the resected specimen revealed angiosarcoma. The preoperative embolization method was effective and easily performed. The patient remains in good health without any evidence of recurrence 4 years after surgery.