Yamada Yuta, Kurosawa Koji, Ohki Takao
Division of Vascular Surgery, Atsugi City Hospital, Atsugi, Kanagawa, Japan.
Division of Vascular Surgery, Department of Surgery, The Jikei University School of Medicine, Tokyo, Japan.
J Vasc Surg Cases Innov Tech. 2024 Jan 28;10(6):101435. doi: 10.1016/j.jvscit.2024.101435. eCollection 2024 Dec.
The arc of Riolan (AoR), a marginal vessel in the left colon, interconnects the superior and inferior mesenteric arteries. A 65-year-old woman presented with an incidental aneurysmal lesion in the left upper abdomen found on ultrasound. Computed tomography revealed a 27-mm saccular aneurysm in the AoR with occlusion of the celiac artery and severe stenosis of the superior mesenteric artery. Angiography showed that the inferior mesenteric artery provided blood to the perfusion areas of the superior mesenteric artery, celiac artery, and left colon via the AoR. We performed open surgical repair of the aneurysm and reconstruction of the inferior mesenteric artery.
里奥尔朗弓（AoR）是左结肠的一条边缘血管，连接肠系膜上动脉和肠系膜下动脉。一名65岁女性因超声检查偶然发现左上腹有动脉瘤性病变。计算机断层扫描显示AoR有一个27毫米的囊状动脉瘤，同时伴有腹腔干闭塞和肠系膜上动脉严重狭窄。血管造影显示，肠系膜下动脉通过AoR为肠系膜上动脉、腹腔干和左结肠的灌注区域供血。我们对动脉瘤进行了开放手术修复，并重建了肠系膜下动脉。
