Diseases affecting the gastrointestinal tract (i.e. organs from mouth to anus) are the focus of this speciality. Doctors specialising in the field are called gastroenterologists. Important advances have been made in the last 50 years, contributing to rapid expansion of its scope.
Hepatology or hepatobiliary medicine encompasses the study of the liver, pancreas and biliary tree and is traditionally considered a subspeciality.
Citing from Egyptianpapyri, Nunn identified significant knowledge of gastrointestinal diseases among practising doctors in Pharaoh periods. Irynakhty, of the tenth dynasty c. 2125 BC was a court physician specialising in gastroenterology and proctology.[1]
Among ancient Greeks, Hippocrates attributed digestion to concoction. Galen's concept of the stomach having four faculties was widely accepted up to modernity.
18th century:
ItalianLazzaro Spallanzani (1729–99) was among early physicians to disregard Galen's theories, and in 1780 he gave experimental proof on the action of gastric juice on foodstuffs.
In 1805 Philip Bozzini made first attempt to observe living human body through a tube he named Lichtleiter (light guiding instrument) to examine the urinary tract, the rectum and the pharynx. This is the earliest description of endoscopy.[4][5]
In 1871, at the society of physicians in Vienna, Carl Stoerk demonstrated an esophagoscope made of two telescopic metal tubes, initially devised by Waldenburg in 1870.
In 1884 Kronecker and Meltzern studied oesophageal manometry in man.
20th century:
Rudolph Schindler described many important diseases involving digestive system during World War I in his illustrated textbook and is portrayed by some as the "father of gastroscopy". He and Wolf developed a semiflexible gastroscope in 1932.
^ Edgardo Rivera, MD James L. Abbruzzese, MD; Pancreatic, Hepatic, and Biliary Carcinomas, MEDICAL ONCOLOGY: A COMPREHENSIVE REVIEW[1]
^ DeStoll M: Rationis Mendendi, in Nosocomio Practico vendobonensi. Part 1 LugduniBatavarum, Haak et Socios et A et J Honkoop 1788, OCLC: 23625746
^ Gilger, Mark A. MD,Gastroenterologic endoscopy in children: past, present, and future. Gastroenterology and nutrition Current Opinion in Pediatrics. 13(5):429-434, October 2001.