â  the ampulla of vater is commonly located in the posteromeâ­dial wall of the second portion of the duodenum. at times, the ampulla of vater may be found at uncommon sites such as the third and fourth portions of the duodenum, the duodenal bulb and the stomach. we found the ampulla of vater in the pyloric channel in a 44 year old patient who had undergone surgery for acute cholecystitis. an in...

In the last few years the author has treated forty consecutive cases of hypertrophic pyloric stenosis with eumydfin (atropine methyl nitrate), which was brought to the notice of paediatricians in this country by Svensgaard in 1935. The analysis of this series has brought out certain points, which, had the writer realized them in time, would have improved the results. These factors are here disc...

In a recent report, Carter and Powell (1954) recorded 12 examples of pyloric stenosis in parent and child, and drew attention to the increased risk of the disease in offspring of parents who were themselves affected. In examining their observations we noted that the risk to the child seemed to be greater if the affected parent was the mother; but the number of cases was small, and the matter ev...

A case of adult hypertrophic pyloric stenosis presented in an older female with no apparent predisposing factors which might be likely to precipitate the condition. There was a history of chronic dyspepsia and occasional episodes of vomiting. No contributory medical history was identified. Barium swallow and follow through showed a markedly reduced emptying time of the stomach. A partial gastre...

In an earlier communication (Flint and Grech, 1970) it was confirmed that the pylorus is normally competent but incompetent in gastric ulcer and chronic alcoholic gastritis and often incompetent in chronic duodenal ulcer. The relationship between pyloric regurgitation and gastric ulcer was also discussed. The purpose of this paper is to give details of the technique used for assessing pyloric r...

In Homarus, the central pattern generators for the rhythmic motor activities of the gastric teeth and the pyloric chamber are located in the stomatogastric ganglion. It is shown that independent gastric and pyloric oscillators are also contained in higher nervous centres (the commissural ganglia) and provide a phasic rhythmic input to the stomatogastric pattern generators. This demonstrates tha...

The pyloric network of the stomatogastric ganglion in crustacea is a central pattern generator that can produce the same basic rhythm over a wide frequency range. Three electrically coupled neurons, the anterior burster (AB) neuron and two pyloric dilator (PD) neurons, act as a pacemaker unit for the pyloric network. The functional characteristics of the pacemaker network are the result of elec...

Intraduodenal nutrient infusions cause an inhibition of antral motility and an increase in pyloric motility. The involvement of gastric myoelectrical activity in this intestinogastric feedback was studied. Electrogastrography and antropyloroduodenal manometry were performed in 10 healthy volunteers. The effects of 20-min infusions of 25% glucose (4 kcal/min) and saline were compared. Intraduode...

Pyloric gland metaplasia of the ileocecal valve, in the setting of Crohn's disease, is an unusual clinical entity. Though its etiology and pathogenesis remains unclear, metaplastic changes have been associated with chronic inflammation and inflammatory bowel disease. Herein, we report a case of a 23-year-old male who presented for surveillance colonoscopy after being diagnosed with Crohn's dise...