LearningRadiology - Antral Web

Antral Diaphragm or Web

• A membrane with a variably-sized opening in the antrum of the stomach

• May occur from 3 months to 80 years

• Histologically

• Mucosa around a central core of submucosa and muscularis mucosae

• Usually no inflammation of the web itself

• Usually located from 1 to 1.5 cm proximal to pyloric canal

X-ray

• Persistent, thin, band-like deformity perpendicular to the long axis of the antrum

• Usually 2-3 mm thick

• Associated ulcers are found in 30-50% of patients

• Rx: May be intentionally ruptured with an endoscope

wh/94