Distribution of peptic ulcer

• 98 - 99% of peptic ulcers occur in the duodenal bulb or the stomach (usually, the antrum)
  • duodenal sites are four times as common as gastric sites
  • 10 - 20% of patients with a gastric ulcer have a concomitant duodenal ulcer.

Less common sites for peptic ulceration include:

• oesophagus - Barrett's oesophagus
• stomach, duodenum and jejunum - Zollinger Ellison syndrome
• Meckel's diverticulum
• gastroenterostomy stoma

Reference

1. National Institute for Health and Care Excellence. Gastro-oesophageal reflux disease and dyspepsia in adults: investigation and management. September 2019 [internet publication].