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A 59-year-old male was admitted to our hospital because of incidentally found right retroperitoneal tumor. He had undergone removal of a hemangioma in the left oral cavity four years before. An abdominal CT scan performed in our hospital revealed poorly enhanced bilateral retroperitoneal tumors adjacent to kidneys. Those tumors were of low signal intensity on T1-weighted images and high on T2-weighted images by magnetic resonance imaging. The right retroperitoneal tumor of 2.5 cm in size was surgically removed and histopathological examination indicated cavernous hemangioma. The smaller left retroperitoneal tumor of 1.1 cm in size was left untouched to be followed up, as we supposed that it has the same benign pathology. There have been no previous cases of retroperitoneal cavernous hemangioma as a presentation of multiple hemangiomas

A Case of Incidentally Found Bilateral Retroperitoneal Cavernous Hemangiomas