Hemosuccus Pancreaticus: A Great Masquerader in Patients with Upper Gastrointestinal Bleeding.

Hemosuccus pancreaticus is a rare but life-threatening cause of upper gastrointestinal bleeding through the main pancreatic duct. This clinical entity is a difficult diagnosis due to its rarity, intermittent nature of the hemorrhage, and peculiar clinical presentation. It is still considered a surgical problem but advances in medical therapy may enable clinically stable patients to undergo less-invasive angiographic embolization. We chronicle here a unique case of hemosuccus pancreaticus in a patient presenting with melena who could not be diagnosed on multiple standard forward-viewing esophagogastroduodenoscopies and computed tomography angiography. Eventually, side-viewing duodenoscope identified the intermittent bleeding through the ampulla of Vater. This paper illustrates that clinicians should be vigilant for this etiology, especially in patients with intermittent crescendo-decrescendo abdominal pain, acute gastrointestinal hemorrhage, and elevated serum lipase levels. A multidisciplinary team approach with the centralization of gastrointestinal bleed services and a well-established management protocol is of paramount importance to reduce the morbidity and mortality of this disorder. Additionally, this article serves to outline our current understanding of the epidemiology of and risk factors for hemosuccus pancreaticus, the pathophysiology of this disease, and currently available approaches to diagnosis and treatment.