Gastric antral webs are a ring of mucosa in the distal stomach (gastric antrum) that can lead to gastric outlet obstruction. A circumferential ring of mucosa has also been termed a "gastric antral diaphragm".
Gastric antral webs are rare. There is an association with trisomy 21 and immunodeficiency syndromes.
- smooth, thin narrowing of the gastric antrum, ~2 cm from the pylorus
- if the web is large, it may result in the appearance of a "double duodenum"
Treatment and prognosis
The web may lead to gastric outlet obstruction. Symptomatic webs may be removed with upper endoscopy 3.
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- 3. Salah W, Baron TH. Gastric antral web: a rare cause of gastric outlet obstruction treated with endoscopic therapy. Gastrointest. Endosc. 2013;78 (3): 450. doi:10.1016/j.gie.2013.07.009 - Pubmed citation