Severe bleeding may complicate the course of either acute or chronic pancreatitis, the latter being more frequently involved. Pseudocysts, severe inflammation, regional necrosis and infection may cause major vessel erosion with or without pseudoaneurysm formation which eventually may result in severe bleeding into the gastrointestinal tract, retroperitoneum and peritoneal cavity. The AA report their experience on 8 cases and analyze the data of a comprehensive review of 389 cases of massive bleeding reported in the literature during the last 100 years until December 1993. Mortality rate seems to be related to the etiology of the bleeding along with its localization and the underlying anatomo-pathologic findings. In patients with chronic pancreatitis it is 22% while in patients with acute pancreatitis or chronic pancreatitis with acute exacerbation it is 60.4% and 57.1% respectively. Splenic, gastroduodenal and superior pancreaticoduodenal arteries are the most commonly involved vessels being associated respectively with a mortality rate of 20.5%, 27.9% and 46.1%. Massive haemorrhage complicating infected necrosis or abscesses implies a worse prognosis when compared to severe bleeding associated with pseudocyst with or without pseudoaneurysm. The increasing use of diagnostic and interventional radiology appears to be the way forward to improve survival rates. Awareness of high risk predisposing condition, activism in achieving an early identification of the bleeding sources, and eventually its angiographic control are essential guidelines for successful approach to the most unpredictable complication of pancreatitis. When embolization fails or is followed by recurrence of hemorrhage, definitive surgical procedures should be immediately instituted.