Gastroesophageal reflux disease
Esophagitis
Hiatal hernia
Esophagus Barrett
Benign tumors of the esophagus
Esophageal cancer
Achalazia
Esophageal motility disorders
Intraesophageal foreign bodies
Esophageal varices
Gastric and duodenal ulcer
Gastritis
Gastric polyps
Benign stomach tumors
Gastric cancer
Gastric varicose veins
Functional dyspepsia
Celiac disease
Benign and malignant tumors of the small intestine
Inflammatory bowel disease (Crohn's disease and ulcerative colitis)
Microscopic colitis
Colonic polyps
Colon cancer

Hemorrhoidal disease
Rectal ulcer
Irritable bowel syndrome
Chronic constipation
Chronic hepatitis B
Chronic hepatitis C
Cirrhosis of the liver
Portal hypertension syndrome
Ascite
Hepatic steatosis
Alcoholic liver disease
Benign liver tumors
Liver cancer
Gallbladder lithiasis
Benign tumors of the gallbladder
Cholangiocarcinoma
Obstructive jaundice
Choledochal lithiasis
Acute pancreatitis
Chronic pancreatitis
Benign tumors of the pancreas
Pancreatic cancer