PT - JOURNAL ARTICLE AU - Shanu Chandran AU - Manish Kumar AU - Tarun John K Jacob AU - Ferzine Mohamed TI - Intestinal obstruction with a twist: a rare case of congenital portal vein aneurysm causing intestinal obstruction AID - 10.1136/bcr-2018-225689 DP - 2018 Sep 21 TA - BMJ Case Reports PG - bcr-2018-225689 VI - 2018 4099 - http://casereports.bmj.com/content/2018/bcr-2018-225689.short 4100 - http://casereports.bmj.com/content/2018/bcr-2018-225689.full AB - Bilious vomiting is often a presenting feature of upper intestinal obstruction in newborn. We present a case of intestinal obstruction in a newborn baby caused by abnormal vascular band arising from portal vein aneurysm in association with a midgut volvulus. Congenital anomalies of portovenous system are very rare, and it usually presents with portal hypertension in late infancy or childhood. In this particular child, the portal vein aneurysm contributed to intestinal obstruction due to both a failure of intestinal rotation and a mechanical band over the transverse colon.