Mondo Description An abnormality characterized by thickening of the muscle in the wall of the pylorus. It results in the narrowing of the pyloric channel. The overlying mucosa may appear hypertrophic as well. Clinical signs and symptoms appear early in life and include projectile vomiting and dehydration.

Disease Ontology Description A pyloric stenosis characterized by the enlargement of the muscle surrounding the pylorus, causing severe projectile non-bilious vomiting.