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galactocoele

A benign cystic tumour in breast tissue

galactorrhoea

Secretion of milk from the breast other than during lactation

galactosaemia

A disorder that affects how the body processes certain sugars.

gallbladder

Small pear-shaped organ that sits under the liver and that stores bile.

gallstones

Lumps of solid matter found in the gallbladder.

gamma camera

A camera that detects gamma rays given off by some radioactive substances.

gangrene

Tissue death owing to very poor blood supply.

gastric banding

A surgical procedure in which a band is placed around the stomach, effectively to reduce its size and so reduce the amount a person can comfortably consume.

gastric bypass

A surgical procedure to bypass the stomach, so that fewer calories are absorbed by the body.

gastritis

Inflammation of the stomach lining.

gastroduodenal Crohn’s disease

A rare form of Crohn’s disease affecting the stomach and the duodenum, the first part of the small intestine.

gastroenteritis

Inflammation of the stomach and intestines usually causing sudden stomach pain that lasts for two or three days.

gastroenterologist

A doctor who specialises in the digestive system and its disorders.

gastroesophageal reflux disease

Disease caused by the abnormal movement of stomach contents back up the oesophagus, or gullet.

gastrointestinal tract

The gut, which begins at the mouth and ends at the anus.

gastrojejunostomy

A surgical procedure in which the jejunum, part of the small intestine, is joined to the stomach.

gene

The basic unit of genetic material carried on chromosomes.

general anaesthetic

Any agent that reduces or abolishes sensation, affecting the whole body.

genetic

Relating to the genes, the basic units of genetic material.

genital herpes

A sexually transmitted infection caused by the herpes simplex virus.

genitourinary

Related to the genital and urinary systems.

geographic tongue

A condition in which smooth, red patches appear on the tongue, giving it a map-like appearance. Their position may change or migrate. It is harmless but on occasion painful

geriatrician

A doctor who specialises in caring for the elderly.

gestation

In pregnancy, the time from conception to birth.