pyloric stenosis

pyloric stenosis
narrowing of the muscular outlet of the stomach (pylorus). This causes delay in passage of the stomach contents to the duodenum, which leads to repeated vomiting (sometimes of food eaten more than 24 hours earlier), and sometimes visible distension and movement of the stomach. If the condition persists the patient loses weight, becomes dehydrated, and develops alkalosis. Congenital hypertrophic pyloric stenosis occurs in babies about 3–5 weeks old (particularly boys) in which the thickened pyloric muscle can be felt as a nodule. Treatment is by the surgical operation of pyloromyotomy (Ramstedt's operation). Recovery is usually complete and the condition does not recur. Pyloric stenosis in adults is caused either by a peptic ulcer close to the pylorus or by a cancerous growth invading the pylorus. Stenosis from peptic ulceration may be treated by healing the ulcer with an antisecretory drug and dilating the pylorus with a balloon, or by surgical removal or bypass (see gastroenterostomy). Surgery is required for cancerous obstruction.

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  • Pyloric stenosis — Classification and external resources Outline of stomach, showing its anatomical landmarks, including the pylorus. ICD 10 K …   Wikipedia

  • Pyloric stenosis — Narrowing (stenosis) of the outlet of the stomach so that food cannot pass easily from it into the duodenum, resulting in feeding problems and projectile vomiting. The obstruction can be corrected by a relatively simple surgical procedure. * * *… …   Medical dictionary

  • pyloric stenosis — noun narrowing of the pyloric sphincter that blocks the passage of food from the stomach into the duodenum • Hypernyms: ↑stenosis, ↑stricture * * * noun : narrowing of the pyloric opening (as from congenital malformation or contraction of scar… …   Useful english dictionary

  • hypertrophic pyloric stenosis — pyloric stenosis caused by muscular hypertrophy and mucosal edema, occurring chiefly in infants; symptoms include nausea, vomiting, epigastric pain, anorexia, weight loss, dehydration, and hypochloremic alkalosis; affected infants have a palpable …   Medical dictionary

  • pyloric stenosis — Pathol. an abnormal narrowing of the valve at the outlet from the stomach, preventing normal passage of food into the small intestine. [1895 1900] * * * …   Universalium

  • pyloric stenosis — noun A narrowing of the pylorus, which prevents the normal passage of food from the stomach to the small intestine …   Wiktionary

  • pyloric stenosis — narrowing of the passage between the stomach and the small intestine (Medicine) …   English contemporary dictionary

  • Пилоростеноз (Pyloric Stenosis) — нарушение проходимости пилорического отдела желудка, обусловленное гипертрофией пилорического сфинктера. Это приводит к замедлению прохождения содержимого желудка в двенадцатиперстную кишку, вызывая повторные приступы рвоты (иногда в рвотных… …   Медицинские термины

  • Stenosis — Classification and external resources CT scan of a bronchial stenosis (arrow) that resulted from tracheobronchial injury MeSH …   Wikipedia

  • Stenosis — A narrowing, as in aortic stenosis (narrowing of the aortic valve in the heart), pulmonary stenosis (narrowing of the pulmonary valve in the heart), pyloric stenosis (narrowing of the outlet of the stomach), spinal stenosis (narrowing of the… …   Medical dictionary

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