Agrawal Sanwar, Memon Ameen
Department of Pediatrics, Ekta Institute of Child Health, Raipur, India.
BMJ Case Rep. 2010 Oct 6;2010:bcr1220092594. doi: 10.1136/bcr.12.2009.2594.
During the 3rd week of intrauterine life there is a communication between the intraembryonic gut and the yolk sac. As the development proceeds this communication narrows into a tube known as the vitellointestinal duct (VID). With the establishment of placental nutrition this duct usually becomes obliterated by the end of the 7th week of intrauterine life. In about 2% of humans this duct persists and gives rise to a group of anomalies of which Meckel's diverticulum is the commonest and complete patency of the duct is the rarest.1 We report a case of a 4-month-old infant who presented with umbilical polyp, discharge from the umbilicus, significant dehydration and failure to thrive because of complete patency of the VID.
在子宫内生活的第3周，胚胎内肠道与卵黄囊之间存在连通。随着发育的进行，这种连通逐渐变窄形成一条称为卵黄肠管（VID）的管道。随着胎盘营养的建立，这条管道通常在子宫内生活第7周结束时闭塞。在大约2%的人类中，这条管道会持续存在，并引发一系列异常情况，其中梅克尔憩室最为常见，而管道完全通畅则最为罕见。1我们报告一例4个月大婴儿的病例，该婴儿因卵黄肠管完全通畅而出现脐息肉、脐部排出物、严重脱水及发育不良。
