pylor-, pyloro-, pylori- +
(Greek: gatekeeper; lower gastric orifice through which the contents of the stomach enter the duodenum)
Pyloric stenosis occurs more often in boys than in girls, and is rare in children older than six months because the condition is usually diagnosed by the time a child is six months old.
2. A surgical operation to widen the opening between the stomach and the small intestine, which allows stomach contents to pass more freely from the stomach.
With the patient under anesthesia the pyloric opening is dilated or expanded and diarrhea is a common postoperative complication.3. An elective surgical procedure in which the lower portion of the stomach, the pylorus, is cut and resutured, to relax the muscle and to widen the opening into the intestine.
Pyloroplasty is a treatment for high-risk patients for gastric or peptic ulcer disease.
A peptic ulcer is a sore on the stomach where the lining of the stomach or duodenum has been eaten away by stomach acid and digestive juices.
The end of the pylorus is surrounded by a strong band of muscle (pyloric sphincter), through which the contents of the stomach are emptied into the duodenum (the first part of the small intestine). Pyloroplasty widens this opening into the duodenum.
2. A surgical opening through the abdominal wall into the stomach near the pylorus.
2. The valve which releases food from the stomach into the intestines.
3. The passage at the lower end of the stomach that opens into the duodenum.
4. A muscular or myovascular structure that opens or closes an orifice or lumen of an organ.