Digestive surgery department, hôpital Lariboisière - Saint-Louis, Assistance publique-Hôpitaux de Paris (AP-HP), 2, rue Ambroise-Paré, 75010 Paris, France.
Radiology department, hôpital Lariboisière, Assistance publique-Hôpitaux de Paris (AP-HP), 2, rue Ambroise-Paré, 75010 Paris, France.
J Visc Surg. 2024 Jun;161(3):226-227. doi: 10.1016/j.jviscsurg.2024.02.006. Epub 2024 Mar 6.
Common mesentery is an abnormal rotation of the primary umbilical loop characterized by inverted positioning of the mesenteric vessels; the mesenteric vein is displaced to the left of the artery. The inversion can be complete or incomplete. If it is incomplete, the mesenteric root is very short, with an empty right iliac fossa and the caecum in high median or subhepatic position. If it is complete, the entire small intestine is on the right, the entire large intestine is on the left; there is no third duodenum, and the second duodenum is anastomosed in the jejunum to the right of the superior mesenteric vessels. Cecal volvulus is a rarely encountered cause of acute intestinal occlusion and should be considered as a surgical emergency. There exist two main types of volvulus: by twisting of the large intestine around its axis, which remains in place; or by tilt and to rotation of the colon, which changes position.
常见肠系膜为脐动脉一级环异常旋转所致，表现为肠系膜血管位置颠倒；肠系膜静脉位于动脉左侧。这种倒置可以是完全的，也可以是不完全的。如果是不完全的，肠系膜根部很短，右髂窝空虚，盲肠位于中高位或肝下。如果是完全的，整个小肠在右侧，整个大肠在左侧；没有第三十二指肠，第二十二指肠在肠系膜上血管右侧与空肠吻合。盲肠扭转是一种罕见的急性肠梗阻原因，应视为外科急症。有两种主要类型的扭转：一种是大肠围绕其轴旋转，位置不变；另一种是结肠倾斜和旋转，位置改变。
