Hematemesis due to double sources: a case report of epistaxis following gastric ulcer

BACKGROUND: Epistaxis is a common condition that can sometimes be overlooked. It usually presents with obvious symptoms but could also present as hematemesis and melena. CASE PRESENTATION: A 78-year-old man presented to our emergency department with melena and shock. Initial endoscopy revealed a bleeding gastric ulcer. However, he had recurrent episodes of hematemesis and melena following coagulation therapy, and a repeat esophagogastroduodenoscopy could not identify the source of bleeding for more than 1 week. Epistaxis from nasal polyps was identified as the cause of hemorrhagic shock. Posterior nasal packing was carried out with Foley catheters, and an endoscopic sinus surgery was finally performed. CONCLUSION: We report a case of epistaxis that caused hematemesis and melena following gastrointestinal bleeding. The diagnosis of epistaxis might have been delayed due to anchoring bias. Clinicians should be aware that epistaxis can mimic upper gastrointestinal bleeding and remember this important differential diagnosis.