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  1. Ga
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List of terms beginning with Ga


A small sack by the liver that stores bile before it is released into the gut to help digest fats. The gallbladder is connected to the gut by the bile duct.


Gallstones are hard lumps that form in the gallbladder. They can cause irritation and inflammation and are made of bile, cholesterol and calcium salts.

Gamma camera

A special type of camera that takes pictures of radiation given off from the body. It is used to produce bone scans and other types of scans.

Gamma knife

Gamma knife is a machine that gives highly targeted (stereotactic) radiotherapy. It gives the radiotherapy from many different angles to produce a high dose at the target area.


An operation to remove all or part of the stomach. Removing the whole stomach is a total gastrectomy. Removing part of it is a partial gastrectomy.


A hormone that stimulates the stomach to release digestive juices.


A rare type of endocrine tumour of the pancreas. It makes and releases (secretes) abnormal amounts of a digestive hormone called gastrin.


Inflammation of the stomach lining. It causes pain and indigestion symptoms and sometimes nausea (sickness) and vomiting. Chronic gastritis can increase the risk of stomach cancer.

Gastro intestinal cancer

Cancer of the digestive system, including the food pipe (oesophagus), stomach, gallbladder, bile ducts, pancreas, bowel, or anus.

Gastro oesophageal junction

The part of the body where the food pipe (oesophagus) connects to the stomach.


A doctor who specialises in diseases of the digestive system.

Gastrointestinal stromal tumour

Gastrointestinal stromal tumour is called GIST for short. It is also known as GI stromal sarcoma. It is a cancer that develops from the cells that make up the supporting framework (the stroma) of the organs of the digestive system (the gastrointestinal tract).


An operation to bypass a blockage of the stomach or duodenum, by joining part of the stomach to the upper part of the small bowel (the jejunum).

Updated: 29 June 2016