Hypertrophic Pyloric Stenosis

**Semantic type:** Disease or Syndrome

**Definition:** 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.

**Synonyms:** - Congenital Constriction of the Pylorus - Congenital Hypertrophy of the Pylorus - Congenital Pyloric Stenosis - Congenital Stricture of the Pylorus - Infantile Constriction of the Pylorus - Infantile Hypertrophy of the Pylorus - Infantile Pyloric Stenosis - Infantile Stricture of the Pylorus