A Case of Asymptomatic Venous Hemangioma of the Colon Resected under Laparoscopic Assisted Surgery

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  • 腹腔鏡補助下に切除した無症候性結腸静脈型血管腫の1例
  • 症例報告 腹腔鏡補助下に切除した無症候性結腸静脈型血管腫の1例
  • ショウレイ ホウコク フククウキョウ ホジョ カ ニ セツジョ シタ ムショウコウセイ ケッチョウ ジョウミャクガタ ケッカン シュ ノ 1レイ

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Abstract

A 50-year-old man was admitted to our hospital complaining of left flank pain. Computed tomography revealed a left ureterolith and also an incidental mass in the transverse colon. Although the flank pain subsided after spontaneous passage of ureterolith, colonoscopy revealed a dark red protruding lesion in the transverse colon mimicking a submucosal tumor, which was a suspicion for hemangioma. To prevent bleeding and obstruction caused by the lesion, we performed elective surgery. Intraoperatively, there was an extramural hemangioma extending into the adjacent omentum in the transverse colon near the hepatic flexure. We performed partial resection of the transverse colon under laparoscopic assistance to include the whole lesion. Histopathological examination showed proliferation of veins with hyperplasia of elastic tissues. The lesion was diagnosed as a venous hemangioma. In the past reports, the majority of colonic hemangiomas were histopatholigically classified as cavernous hemangiomas. Most of these were symptomatic, with the most frequent symptom being intestinal bleeding. We report an extremely rare case of venous hemangioma, which was diagnosed incidentally.

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