In adults, the usual cause is a peptic ulcer of such antiquity that repeated cycles of injury and scarring have narrowed the passageway.
Vomiting is the constant symptom of duodenal obstruction. It may be preceded by indigestion and nausea as the stomach attempts
Bowel obstruction requires a surgeon, sometimes immediately.
Prompt and effective treatment of peptic ulcers will prevent chronic scarring and narrowing.
X rays taken with contrast material in the stomach readily demonstrate the site of the blockage and often the ulcer that caused it. Gastroscopy is another way to evaluate the problem
Duodenal is not a sphincter. The other options (esophageal, pyloric, ileocecal) are all sphincters.
duodenal glands
Duodenal deformity refers to an abnormality or malformation of the duodenum, which is the first section of the small intestine. This condition can manifest as a narrowing, obstruction, or displacement of the duodenum, potentially leading to digestive issues. It may be congenital or acquired and can result in symptoms like vomiting, abdominal pain, or malnutrition. Treatment often involves surgical intervention to correct the deformity and restore normal function.
About 80% of all ulcers in the digestive tract are duodenal ulcers.
This website has easy to understand information about the duodenal switch. It should spark many good questions to ask your doctor. http://www.yourbariatricsurgeryguide.com/duodenal-switch/
Duodenal
Duodenal ulcers
The adjective form for "duodenum" is "duodenal." It is used to describe anything related to the duodenum, which is the first section of the small intestine. For example, one might refer to "duodenal ulcers" or "duodenal anatomy."