Abstract
Mesenteric hemangiomas are rare. A 70-year-old woman received an abdominal CT after EMR of early colon cancer, upon which a tumor of 55×77 mm was detected in the jejunum mesentery. The tumor rapidly enhanced from the contrasting early phase at the same intensity as the great vessels. Because the nutrient artery originates from the superior mesenteric artery, we diagnosed this as an angiogenic tumor. Endoscopic sonography revealed that there was no blood stream inside the tumor. Thus, we performed a laparoscopic partial resection of the jejunum and diagnosed a mesenteric hemangioma. The tumor was a solid, elastic-soft mass, 8×7×6 cm in size. The tumor wedge was dark red and the pathological diagnosis was hemangiomas of the small mesentery. To the best of our knowledge, only 26 cases, including this case, of hemangioma of the small mesentery have been reported in Japan to date. Among these reported cases, the average age was 36 years and the mean tumor diameter was 15.2 cm. Chief complaints include abdominal pain, abdominal distension, and bleeding. In our case, we could provide a pre-operative diagnosis because the nutrient artery was distinctly described in addition to the characteristic findings of the CT image.
