The pyloric sphincter is a band of smooth muscle that plays an important role in moving the contents of your stomach into your small intestine. It also prevents partially digested food and stomach ...

Pyloric Stenosis Symptoms. Signs of pyloric stenosis usually show up when a baby is 3 to 5 weeks old. Babies who have it don't look sick, but they throw up a lot.

Pyloric stenosis occurs when the valve connecting the stomach to the intestines narrows, preventing food and water from getting through. Learn more here.

Pyloric stenosis is most likely to affect young babies. It’s found in 2 to 3 out of every 1,000 babies. It most often appears in the first 2 to 8 weeks of life, although it can occur in babies ...

Pyloric stenosis is rare — in the U.S., it’s seen in only three out of 1000 newborns. Also, it’s a curable condition that can be easily diagnosed and fixed with minimally invasive surgery. ...

The relevant parts of the stomach are the corpus, where food is stored; the antrum, where food is ground; and the pylorus, or pyloric sphincter, the tissue valve that connects to the small intestine.

Prepyloric ulcers are a type of peptic or gastric ulcer. These open sores develop in the upper digestive tract, just above the pylorus, which is the opening to the small intestine.

July 24, 2002 -- Exposure to erythromycin between 3 and 13 days of life is associated with an eightfold risk of infantile hypertrophic pyloric stenosis (IHPS) developing shortly thereafter ...