Title: A CASE OF GIANT INTRAMUSCULAR ANGIOMA OF THE RETROPERITONEUM
Abstract: A 19-year-old man was seen at the hospital because of a left lower abdominal tumor. The tumor was infant's head in size and unmovable. Abdominal CT and angiography revealed a retroperitoneal tumor with plenty of blood flow. A possibility of malignant tumor was suspected and operation was carried out. Histopathological examination resulted in that the tumor was an intramuscular angioma arising in the retroperitoneal iliopsoas muscle, without malignant findings. Intramuscular angiomas are benign tumors and commonly found in the skeletal muscles of the extremities. The tumor in this case, however, arised in the left ileopsoas muscle and grew in the retroperitonum. The intramuscular angioma of the retroperitoneum is rare, but when we encounter a tumor with plenty of blood flow, this this type of tumor should be entertained as a probable diagnosis. In terms of this point, this paper also presents the methods of diagnosis, laparotomy findings, and some device for excision procedure.