Melena, crohn's disease.......Hemorrohids , anal fissure might b causes
In anal fissure stool will be in red color
Malena... Due to any causes of lower GI bleed
Melena. After bleeding of gastroduodenal ulcer
Melena upper gi bleeding... Black colour due to the digested hb to acid hematin causes are esophagial varieses in portal hyper tension , peptic ulcer bleeding
Isn’t that Meconium from a baby