Stomach ulcers and germs
Esophagitis
Reflux (burning)
Difficulty swallowing
Weight loss
Tissue sampling (tumors, wheat allergy, lactose intolerance)
Extraction of foreign bodies
Fleshy removal
Enlargement (esophagus or intestine)
Stent (esophagus or intestine)
Connecting esophageal varices
Stopping stomach and duodenal bleeding
Examination of esophageal and stomach pockets
Abdominal pain
Vomiting of blood
Black stools
Cases of chronic diarrhea
Requirement for some surgeries (for example, for regurgitation and sleeve gastrectomy)