Etiology

Patients with UGIB can typically be separated into two groups: those with variceal lesions (either esophageal or gastric) and those with nonvariceal lesions (most commonly peptic ulcers). [Figure caption and citation for the preceding image starts]: Moderate to severe esophagitis with multiple linear, clean-based esophageal ulcersFrom the collection of Douglas G. Adler, MD [Citation ends].com.bmj.content.model.assessment.Caption@219c4ba[Figure caption and citation for the preceding image starts]: Large gastric ulcer along the lesser curvature with a visible vessel in the ulcer bed (arrow)From the collection of Douglas G. Adler, MD [Citation ends].com.bmj.content.model.assessment.Caption@2836a5e[Figure caption and citation for the preceding image starts]: Large gastric ulcer with large, protuberant visible vesselFrom the collection of Douglas G. Adler, MD [Citation ends].com.bmj.content.model.assessment.Caption@4d1d3a48[Figure caption and citation for the preceding image starts]: Grade II esophageal varices in a patient with portal hypertensionFrom the collection of Douglas G. Adler, MD [Citation ends].com.bmj.content.model.assessment.Caption@480ff685[Figure caption and citation for the preceding image starts]: Ulcer in the mid-esophagus with a visible vesselFrom the collection of Douglas G. Adler, MD [Citation ends].com.bmj.content.model.assessment.Caption@61c3fe5c

The most frequently encountered etiologies of UGIB are:[5][6]​​

  • Peptic ulcer disease (26% to 36%)

  • Gastritis/erosions (16% to 22%)

  • Esophagitis (17% to 24%)

  • No cause found (12% to 17%)

  • Erosive duodenitis (9% to 13%)

  • Varices (8% to 11%)

  • Portal hypertensive gastropathy (4.0% to 4.5%)

  • Mallory-Weiss tears (3.0% to 4.3%)

  • Malignancy (3.0% to 3.7%)

  • Other: including vascular ectasia and hemobilia (2.6%)

UGIB from malignant lesions is usually low-level and chronic, and only infrequently leads to acute bleeding.

It should be noted that varices should not be eliminated as a consideration in young pediatric patients; portal hypertension can be caused by vascular abnormalities and conditions other than alcoholic cirrhosis.

In most patients, likely causes of the bleeding can be ascertained through a thorough history and physical exam.

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