A 2-month-old male child comes into the Shadow General Hospital Emergency Department with dehydration due to projectile vomiting since birth. On physical exam you note marked peristalsis (waves visible on inspection of the abdomen). This is a sign of what pathologic process?

Pyloric Stenosis

Explanation:

Pyloric Stenosis -

It is a pathological process, which results in the thickening of the muscle that is present between the intestines and the stomach, known as the pylorus, which lead to extreme vomiting for few months.

Hence, from the question, the two month baby is suffering for the condition of Pyloric Stenosis.