Fukuzawa Ryuji, Toma Miki, Nomura Aya
Department of Pathology and Laboratory Medicine, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan.
Pediatr Dev Pathol. 2011 Nov-Dec;14(6):493-5. doi: 10.2350/11-06-1053-CR.1. Epub 2011 Aug 29.
We report a case of gastroschisis in which a paraumbilical band was found at the right margin of the abdominal wall defect and extended into the antimesenteric side of the small intestine. The band consisted of 2 thin cords. Microscopically, 1 band showed a fibrous tissue, and the other 1 revealed a unique vascular structure resembling the vitelline artery and vein, suggesting that the paraumbilical band represents a remnant of the yolk stalk that failed to be incorporated into the umbilical stalk. The origin of the paraumbilical band and an associated pathogenetic hypothesis of gastroschisis are discussed.
我们报告一例腹裂病例，在腹壁缺损的右侧边缘发现一条脐旁带，并延伸至小肠的系膜对侧。该带由两条细索组成。显微镜下，一条带显示为纤维组织，另一条则呈现出类似卵黄动静脉的独特血管结构，提示脐旁带代表未融入脐索的卵黄蒂残余。本文讨论了脐旁带的起源及腹裂相关的发病机制假说。
