Five Ways of GI Bleeding Hematemesis: vomitting of blood of altered blood (coffee grounds indicates bleeding proximal to ligament of Treitz Melena: Tarry stool. Altered (black blood per rectum (>60ml) Hematochezia: Bright red or maroon rectal bleeding implies bleeding beyond Lig. T. FOBt and iron deficiency anemiaFive Ways of GI Bleeding Hematemesis：vomitting of blood of altered blood（coffee grounds） indicates bleeding proximal to ligament of Treitz Melena：Tarry stool. Altered （black） blood per rectum （>60ml） Hematochezia： Bright red or maroon rectal bleeding implies bleeding beyond Lig.T.* FOB+ and Iron deficiency anemia