Catalog

Heterotopic gastric mucosa

No MMS code

Link to WHO Definition

Heterotopic gastric mucosa – http://id.who.int/icd/entity/493562184

Heterotopic gastric mucosa (HGM) is abnormally placed gastric mucosa outside of the stomach. This is frequent in the cervical oesophagus, and widely considered to be congenital in nature. Most carriers are asymptomatic, but symptoms as well as morphologic changes associated with HGM are regarded as a result of the damaging effect of acid, produced by parietal cells in the mostly fundic type of HGM. Tiny microscopic foci have to be distinguished from a macroscopically visible patch, also called ‘inlet patch’.