Introduction

Double pylorus, also known as acquired gastroduodenal fistula, is an exceptionally rare endoscopic finding. It occurs in approximately 0.001% to 0.4% of upper gastrointestinal examinations. This condition involves an accessory channel connecting the gastric antrum to the duodenal bulb. While often asymptomatic, it can present with significant complications. Understanding acquired double pylorus management is crucial for clinicians treating elderly patients with unexplained gastrointestinal symptoms.

Case Presentation

A recent case report described a 78-year-old woman recovering from a pelvic fracture. While receiving prophylactic dalteparin, she suddenly developed weakness, abdominal discomfort, and nausea. Laboratory tests showed a significant hemoglobin drop of 2.9 g/dL. Urgent endoscopy revealed a double pylorus. Further investigation through biopsy confirmed a Helicobacter pylori infection. This case highlights how silent anatomical changes can trigger acute clinical crises in medically vulnerable populations.

Pathophysiology and Risk Factors

Acquired double pylorus typically develops as a complication of chronic peptic ulcer disease. A penetrating ulcer erodes through the gastric and duodenal walls, creating a fistula. Clinicians frequently observe associations with H. pylori infection and the long-term use of nonsteroidal anti-inflammatory drugs (NSAIDs) or corticosteroids. These factors impair mucosal integrity and delay the healing of the fistulous tract. Furthermore, systemic conditions like diabetes or chronic kidney disease may further compromise microcirculation, predisposing patients to this rare deformity.

Acquired Double Pylorus Management

The primary goal of acquired double pylorus management is to optimize mucosal healing and address underlying triggers. Most cases respond well to conservative medical therapy. Physicians should prioritize H. pylori eradication and the immediate cessation of ulcerogenic medications. High-dose proton pump inhibitors (PPIs) remain the cornerstone of treatment. While the fistula often remains patent in about 60% of patients, it rarely requires surgical intervention unless refractory bleeding or obstruction occurs. Consequently, regular endoscopic follow-up is recommended to monitor for ulcer recurrence.

Conclusion

Although rare, double pylorus represents a significant diagnostic consideration in elderly patients with GI bleeding. Early endoscopic identification allows for targeted medical intervention. Addressing environmental and infectious risk factors remains the most effective strategy for preventing further complications and ensuring long-term patient safety.

Frequently Asked Questions

1. What is the difference between congenital and acquired double pylorus?

Congenital double pylorus is an extremely rare developmental anomaly present from birth. In contrast, acquired double pylorus is a complication of peptic ulcer disease where a fistula forms between the stomach and the duodenum due to deep ulcer penetration.

2. How is double pylorus typically diagnosed?

Diagnosis occurs primarily through upper gastrointestinal endoscopy (esophagogastroduodenoscopy). The endoscopist visualizes two distinct openings in the antrum that both lead into the duodenal bulb.

3. Does double pylorus always require surgery?

No, most cases do not require surgery. Medical management focusing on acid suppression and treating H. pylori is usually sufficient. Surgery is reserved for complications like persistent bleeding, perforation, or gastric outlet obstruction.

Disclaimer: This content is for informational and educational purposes only. It does not constitute medical advice or a substitute for professional healthcare consultation. Refer to the latest local and national guidelines for clinical practice.

References

• Isayeva G et al. Double pylorus in an elderly female patient: a case report. J Med Case Rep. 2026 Feb 07. doi: 10.1186/s13256-026-05859-6. PMID: 41654979.


• Kiyak M, et al. Double Pylorus Presenting with Gastrointestinal Bleeding: A Rare Case Report. Clin Ter. 2023;174(1):4-7. doi: 10.7417/CT.2023.5001.


• Oktaricha H, Miftahussurur M. Double Pylorus in Upper Gastrointestinal Bleeding. Case Rep Gastroenterol. 2021;15(1):332-337. doi: 10.1159/000513804.