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Specialty guide

Upper gastrointestinal care: oesophagus, stomach, gallbladder, pancreas and liver conditions

Upper gastrointestinal care covers conditions of the oesophagus, stomach, small bowel, gallbladder, pancreas and liver, and spans gastroenterology, endoscopy and surgery. This guide explains who the specialists are, which conditions they treat, what gastroscopy and other tests involve, the operations used, how NHS and private referral usually proceed and which symptoms need urgent assessment.

Last checked: 2026-10-10

Key facts

At a glance.

  • Gastroscopy

    The NHS says a gastroscopy checks the food pipe, stomach and top of the intestine using a thin tube with a camera, usually takes 15 to 45 minutes and should not be painful.

  • Warning symptoms

    The NHS says indigestion or reflux with weight loss without trying, difficulty swallowing, frequent vomiting or blood in vomit needs urgent GP assessment or NHS 111.

  • Gallstones

    The NHS says the main treatment for gallstones that cause symptoms is surgery to remove the gallbladder, called cholecystectomy.

  • Stomach ulcers

    The NHS says the main causes of stomach ulcers are H pylori infection and regular use of anti-inflammatory painkillers such as ibuprofen.

  • Cancer treatment

    The NHS says treatment for oesophageal cancer may include surgery, chemotherapy, radiotherapy, and targeted medicines and immunotherapy, depending on the cancer and the person.

What upper GI care covers and who the specialists are

The upper gastrointestinal tract runs from the mouth to the duodenum, and in clinical practice the field also includes the gallbladder, bile ducts, pancreas and liver, sometimes grouped as hepatopancreatobiliary disease. Problems range from common, self-limiting complaints such as indigestion to serious cancers and emergencies such as bleeding ulcers.

Several specialists are involved. Gastroenterologists are physicians who diagnose and manage digestive disease and perform endoscopy. Upper GI surgeons are general surgeons with specialist training in oesophageal and stomach surgery, and bariatric work in many centres, while hepatopancreatobiliary surgeons concentrate on liver, pancreas and bile duct surgery. Oncologists, radiologists, pathologists, dietitians and specialist nurses form multidisciplinary teams for cancer. The Association of Upper Gastrointestinal Surgeons (AUGIS) is the professional body, and has subcommittees covering oesophagogastric cancer, hepatopancreatobiliary disease, emergency surgery, bariatrics and endoscopy.

Complex cancer surgery is concentrated in high-volume centres, so a person may be referred beyond their local hospital for an operation while keeping local follow-up.

Conditions treated

  • Gastro-oesophageal reflux and hiatus hernia. The NHS says a hiatus hernia is when part of the stomach moves up into the chest, is very common over 50 and does not normally need treatment if it is not causing problems.

  • Barrett's oesophagus, a change in the lining of the lower oesophagus linked with long-term reflux, which is monitored by endoscopy.

  • Peptic ulcer disease, which the NHS describes as sores in the stomach or duodenum causing upper abdominal pain, often worse at night, indigestion and bloating.

  • Swallowing disorders such as achalasia and dysphagia, which need assessment for causes including cancer.

  • Oesophageal and stomach cancer, which are treated by multidisciplinary teams combining surgery with chemotherapy or radiotherapy.

  • Gallstones and their complications, including biliary colic, cholecystitis, bile duct stones and pancreatitis.

  • Pancreatic and liver disease, including pancreatic cancer, chronic pancreatitis and liver tumours.

  • Obesity-related surgery in some departments, and emergency presentations such as bleeding ulcers and perforation.

Tests and procedures

Gastroscopy is the central test. The NHS says it is used to find the cause of digestive symptoms, treat problems such as widening the food pipe or stopping bleeding, and check for cancers. You stop eating at least 6 hours beforehand, are offered throat spray or sedation, and a thin flexible tube is passed through the mouth. The test takes 15 to 45 minutes, a biopsy may be taken, and if you have sedation you need someone to take you home and stay with you for 24 hours.

Common investigations in upper GI care
InvestigationWhat it shows or does
Gastroscopy with biopsyLooks at the lining of the oesophagus, stomach and duodenum, and samples tissue
Breath, stool or biopsy tests for H pyloriDetects the infection that commonly causes stomach ulcers
Ultrasound scan of the abdomenShows gallstones, as the NHS notes, and liver and bile duct changes
CT and MRIStage cancer, assess the pancreas and liver and look for complications
Endoscopic ultrasoundDetailed imaging from inside the gut, and sampling of nodes or masses
ERCPA camera procedure to clear stones from the bile duct, as the NHS describes
Blood testsCheck for anaemia, liver and pancreas function and inflammation

Treatments and operations

Many conditions are treated with medicines and lifestyle change. For hiatus hernia the NHS suggests smaller meals, raising the head of the bed, weight loss and avoiding smoking, with antacids or stronger acid-suppressing medicines if needed, and tests and sometimes surgery if these fail. Stomach ulcers are treated by removing causes, such as eradicating H pylori with antibiotics and stopping or changing anti-inflammatory painkillers, alongside acid suppression.

Surgery includes keyhole cholecystectomy for symptomatic gallstones, anti-reflux and hiatus hernia repair, oesophagectomy and gastrectomy for cancer, pancreatic and liver resections, and bariatric operations such as sleeve gastrectomy. The NHS says oesophageal cancer surgery removes part, or in a few people most, of the oesophagus and sometimes other nearby tissue, and may be combined with chemotherapy before or after surgery. Recovery from major operations takes weeks to months, with dietary adaptation and specialist nutritional support.

Endoscopic treatments, including dilation, stents, banding, clips for bleeding and removal of early cancers, can avoid open surgery in selected cases.

NHS and private referral routes

On the NHS, most upper GI symptoms are first assessed by a GP, who may treat for indigestion, test for H pylori or refer for gastroscopy. Suspected cancer pathways give priority to people with alarm features such as difficulty swallowing, weight loss or persistent vomiting. The NHS advises asking for an urgent GP appointment or contacting NHS 111 for ulcer symptoms with weight loss, difficulty swallowing or persistent vomiting, and calling 999 for vomiting blood or black stools.

Privately, a person can usually see a gastroenterologist or upper GI surgeon directly and have a gastroscopy within days. Ask about the specialist's experience with your condition, whether the quoted price includes biopsies, histology and sedation, and who will manage complications or cancer treatment if something serious is found, because major cancer surgery is often done in specialist NHS centres.

What to ask and when to act urgently

  • What do you think is causing my symptoms, and what tests are needed to confirm it?

  • What does gastroscopy involve, and do I need sedation and someone to accompany me?

  • If treatment is suggested, what are the alternatives, including doing nothing or waiting?

  • How will diet and eating change after any operation, and who will support me?

  • What follow-up or surveillance is needed afterwards?

  • Call 999 or go to A&E for vomiting bright red blood or coffee-ground material, black sticky stools, severe abdominal pain or a rigid tender abdomen, or sudden severe pain spreading to the back with vomiting or yellow skin, as the NHS advises.

Frequently asked

Questions people ask.

Quick, plain-English answers to the questions we hear most.

  • What is a gastroscopy and does it hurt?

    A gastroscopy uses a thin flexible camera passed through the mouth to examine the food pipe, stomach and duodenum. The NHS says it should not be painful, and you can have throat spray or sedation, and ask for it to be stopped at any time.

  • When should indigestion be investigated?

    See a GP if it does not go away with treatment or keeps coming back. The NHS advises urgent advice if there is weight loss, difficulty swallowing, frequent vomiting, blood in vomit or upper tummy pain with indigestion.

  • What causes stomach ulcers?

    The NHS says the main causes are infection with Helicobacter pylori bacteria and regular use of anti-inflammatory painkillers such as ibuprofen. Smoking and older age increase the risk, and testing and treating H pylori usually allows the ulcer to heal.

  • Do all gallstones need surgery?

    No. The NHS says gallstones that do not cause symptoms often need no treatment, and surgery to remove the gallbladder is the main treatment when they cause symptoms or complications. Stones in the bile duct may be cleared by ERCP.

  • What is a hiatus hernia?

    The NHS describes it as part of the stomach moving up into the chest. It is very common over 50 and does not normally need treatment unless it causes problems such as heartburn and acid reflux, when lifestyle changes and medicines are used.

  • What is Barrett's oesophagus?

    A change in the cells lining the lower oesophagus, usually caused by long-term acid reflux, that slightly increases the risk of oesophageal cancer. People with it are generally offered periodic endoscopic surveillance, and acid-suppressing treatment.

  • How is oesophageal cancer treated?

    The NHS says treatment depends on the size, type and location of the cancer, whether it has spread and general health. It may include surgery, chemotherapy, radiotherapy, targeted medicines and immunotherapy, planned by a specialist team.

  • Will I be able to eat normally after upper GI surgery?

    Often with adaptation. After operations such as gastrectomy or oesophagectomy people usually need smaller, more frequent meals and dietetic support, and weight loss is common. Your team should give specific guidance.

  • Can I get a private gastroscopy quickly?

    Often within days to weeks in the private sector. Check the price covers sedation and biopsies, and ask how results will be communicated and what happens if a further test or treatment is needed.

  • What is the difference between a gastroenterologist and an upper GI surgeon?

    A gastroenterologist is a physician specialising in digestive disease and endoscopy, treating mostly without operations. An upper GI surgeon performs operations on the oesophagus, stomach and related organs. They work together in multidisciplinary teams.

Where this comes from

Sources and checking.

This guide is for information, not medical advice.

Your GP or consultant knows your history and can tell you which parts apply to you. If your symptoms are severe, rapidly worsening, or come with red-flag features, seek urgent medical care. Figures and availability change, so treat them as a guide and confirm with the provider.

Published 2026-10-10, next review 2027-10-10.