Possible Diagnoses for Hematemesis
Peptic ulcer disease is the most common cause of hematemesis, accounting for 35-50% of cases, followed by gastroduodenal erosions (8-15%), Mallory-Weiss tears (15%), oesophagitis (5-15%), and varices (5-10%). 1
Primary Differential Diagnosis
The British Society of Gastroenterology guidelines provide clear epidemiologic data on causes of acute upper gastrointestinal hemorrhage presenting with hematemesis 1:
Most Common Causes (in order of frequency):
- Peptic ulcer disease (35-50%) - This includes both gastric and duodenal ulcers and represents the single most likely diagnosis
- Mallory-Weiss tear (15%) - Mucosal tear at gastroesophageal junction, typically following forceful vomiting
- Gastroduodenal erosions (8-15%) - Often NSAID or stress-related
- Oesophagitis (5-15%) - Erosive esophagitis from acid reflux
- Varices (5-10%) - Esophageal or gastric varices in cirrhotic patients
Less Common Causes:
- Upper gastrointestinal malignancy - Gastric or esophageal cancer
- Vascular malformations (1%) - Angiodysplasia, Dieulafoy lesions
- Rare causes (5%) - Including aortoenteric fistula, hemobilia, bronchial artery aneurysm rupture into esophagus 2, ectopic thyroid hemorrhage 3, or metastatic disease 4
Clinical Context Matters
Approximately 80% of cases will have an identifiable cause on endoscopy 1. The remaining 20% may have self-limited bleeding or require further investigation.
Key Clinical Distinctions:
- Hematemesis with melena indicates more severe bleeding than melena alone 1
- Fresh red blood (hematemesis) suggests active or recent upper GI bleeding
- Coffee-ground emesis indicates altered blood from slower or resolved bleeding 1
Important Risk Stratification:
When hematemesis presents with hemodynamic instability (systolic BP <100 mmHg, pulse >100 bpm), consider:
- Variceal hemorrhage in patients with known or suspected cirrhosis 5
- Large peptic ulcer with arterial bleeding
- Aortoenteric fistula in patients with prior aortic surgery
- Massive bleeding from any source requiring urgent endoscopy
Critical Pitfalls to Avoid
Do not assume all hematemesis is from the stomach - rare causes like ruptured bronchial artery aneurysm can present as hematemesis when bleeding tracks into the esophagus 2. When hematemesis occurs with acute dysphagia, consider intramural esophageal hematoma and obtain CT before endoscopy to avoid perforation risk 6.
In patients with prior hepatobiliary surgery or cholangiocarcinoma, consider metastatic disease to the stomach as a rare cause 4.
Portal and mesenteric vein thrombosis can rarely present with massive hematemesis as the initial manifestation, even in previously healthy young adults 7.
Immediate Diagnostic Approach
The diagnosis requires urgent upper endoscopy (esophagogastroduodenoscopy) within 24 hours of presentation, or immediately if hemodynamically unstable 1. This allows both diagnosis and potential therapeutic intervention. The mortality rate is 11% for patients admitted with bleeding and significantly higher (33%) for those who develop bleeding while hospitalized for other conditions 1.
Patients should be managed by or in consultation with gastroenterology specialists, as mortality is lower in specialist units due to adherence to protocols rather than technical factors alone 1.