<prompt> Not a cause of upper GIT bleedingMeckels diveiculumMallory Weiss SyndromeGastric antral vascular ectasiaPoal hypeension  <response>: Meckels diveiculum - Found in Ileum distal to ligament of Treitz Cause of lower GI BLEED Location of Ligament of Treitz is Duodenojejunal flexure 