what are the folds in the stomach lining
What is MÃ©nÃ©trierâs disease? MÃ©nÃ©trierâs disease causes the ridges along the inside of the stomach wallâcalled rugaeâto enlarge, forming giant folds in the stomach lining. The rugae enlarge because of an overgrowth of mucous cells in the stomach wall. In a normal stomach, mucous cells in the rugae release protein-containing mucus.