What is the cause of gastrointestinal bleeding black stool?

Digestive tract bleeding black stool causes include esophageal disease, gastroduodenal disease, gallbladder disease, etc.

1. Esophageal diseases such

as esophageal injury, esophageal diverticulitis, esophageal cardia mucosal tear, aortic aneurysm or esophageal cancer, etc., are easy to cause esophageal vascular rupture, bleeding, blood and food mixed together will form black stool.

2. Gastroduodenal diseases

including peptic ulcer, stomach, duodenal polyps or tumors, esophageal gastric varices rupture, acute erosive hemorrhagic gastritis, swallowing foreign bodies or radiation, etc., can damage gastric and duodenal mucosal tissue, and then cause bleeding, blood mixed with feces discharged under the action of digestive juice, can lead to black stool color.

3. Gallbladder diseases such

as biliary tract or gallbladder stones, biliary ascariasis, gallbladder cancer, bile duct cancer, etc., can damage gallbladder and bile duct tissue caused by bleeding, blood into the digestive tract will also form black stool.