Pyloric Stenosis

In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan.


Pyloric stenosis, also known as infantile hypertrophic pyloric stenosis (IHPS), is an uncommon condition in infants characterized by abnormal thickening of the pylorus muscles in the stomach leading to gastric outlet obstruction. Clinically infants are well at birth. Then, at 3 to 6 weeks of age, the infants present with "projectile" vomiting, potentially leading to dehydration and weight loss.

The radiologist plays a central role in diagnosing this condition. The treatment is surgical.

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