The most common disease of the digestive system were: diseases of oesophagus, stomach and duodenum and tend to become more common with age; diseases of liver; appendix; disorders of gallbladder, biliary tract and pancreas; noninfective enteritis and colitis; hernia; other diseases of intestines; diseases of oral cavity, salivary glands and jaws; diseases of pertoneum; other diseases of the digestive system.