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      Gastrointestinal bleeding due to an erosion of the superior mesenteric artery: an exceptional fatal complication of pancreatic pseudocyst

      case-report

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          Abstract

          The erosion of a pancreatic pseudocyst into an adjacent artery is a rare and highly lethal complication of pancreatitis with reported death rates of 12% to 40%. The majority of patients had bleeding from the splenic artery, the gastroduodenal artery and the anterior pacreaticoduodenal artery. Exceptionally, some cases with bleeding from the superior mesenteric artery, or hepatic artery were reported. We report the case of a 50 year old patient having a cataclysmic upper gastrointestinal bleeding due to an erosion of the superior mesenteric artery by a pancreatic pseudocyst, and discuss contemporary methods in diagnosis and management of the condition

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          Most cited references7

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          Visceral pseudoaneurysms due to pancreatic pseudocysts: rare but lethal complications of pancreatitis.

          Erosion of pancreatic pseudocysts into adjacent vessels is a rare but highly lethal cause of intra-abdominal hemorrhage. Percutaneous angiographic embolization (PAE) of the bleeding artery has recently been advocated as the preferred therapy. This study was undertaken to survey the outcome after treatment of this complication and to make recommendations for its management. An 11-year retrospective analysis was performed of all patients treated at a large tertiary care referral center for visceral artery pseudoaneurysms associated with pancreatic pseudocysts. From 1988 to 1998, 256 patients were admitted for complications of pancreatic pseudocysts. Sixteen patients (11 men and 5 women) were identified in whom a pseudocyst had eroded into a major blood vessel with hemorrhage or development of a false aneurysm. The mean age was 45 years (range, 23-67 years). Active bleeding was present in 13 patients, whereas three had evidence of recent hemorrhage. Ten of 16 patients initially underwent operative therapy, four elective and six emergency, whereas six stable patients were initially treated with PAE. Technical failures of the initial treatment or secondary complications required both therapeutic modalities in six patients, which resulted in 13 total surgical interventions and 10 PAEs. The surgical morbidity rate was 62% (8 of 13), whereas that of PAE was 50% (5 of 10). Three deaths occurred after emergency operations, two of which failed to stop the bleeding, accounting for all of the deaths in the series (3 [19%] of 16). A trend was noted toward increased death with necrotizing pancreatitis (P =.07) and emergency surgery (P =.06). Ranson's criteria were not found to be predictive of death in this series. Surgical drainage procedures were required in seven (44%) of 16 patients for infections (n = 3) or mass effect of the pseudoaneurysm (n = 3). The mean size of pseudoaneurysms that required operative intervention for secondary complications was 13.9 cm, compared with 7.7 cm for all others in the series (P =.046). Long-term follow-up was available in all 13 survivors at a mean of 44 months (range, 1-108 months). The management of pancreatic pseudocyst-associated pseudoaneurysms remains a challenging problem with high morbidity and death rates. Operation and PAE play complementary management roles. PAE is recommended as the initial therapy for hemodynamically stable patients. Surgery should be reserved for actively bleeding, hemodynamically unstable patients; for failed embolization; and for other secondary complications such as infection or extrinsic compression.
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            Rupture of a bleeding pancreatic pseudocyst into the stomach.

            A bleeding pancreatic pseudocyst following pancreatitis is a severe complication that can lead to massive gastrointestinal bleeding. Rupture of such a pseudocyst into the stomach is rare. We report herein a case of rupture of a bleeding pseudocyst into the stomach in a patient who was successfully treated with emergency surgery. A 60-year-old Japanese man with a history of chronic alcoholic pancreatitis with a pancreatic tail pseudocyst was referred to us because of hematemesis. The cavity of the pseudocyst, which was 3 cm in size and whose wall adhered to the stomach, was enhanced by dynamic bolus computed tomography (CT) in the late arterial phase. Splenic angiography revealed a bleeding pseudocyst in the splenic hilum. Embolization of the pseudocyst failed, because of arterial spasm. A distal pancreatectomy, splenectomy, and total gastrectomy were performed. The wall of the pseudocyst consisted of the pancreatic tail, granulation tissue, and the posterior wall of the stomach. The patient's postoperative course was uneventful. In the management of massive bleeding from a pseudocyst, early diagnosis with dynamic bolus CT and angiography is essential. A bleeding pseudocyst should be considered to be a lethal complication, but it can possibly be treated with a combination of angiographic embolization and surgery.
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              Severe hemorrhagic complications in pancreatitis.

              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.
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                Author and article information

                Journal
                Pan Afr Med J
                Pan Afr Med J
                PAMJ
                The Pan African Medical Journal
                The African Field Epidemiology Network
                1937-8688
                04 July 2012
                2012
                : 12
                : 62
                Affiliations
                [1 ]Department of Surgery, Mohamed Tahar Maamouri Hospital, 8000 Mrazga, Nabeul, Tunisia
                [2 ]Department of Ranimation, Mohamed Tahar Maamouri Hospital, 8000 Mrazga, Nabeul, Tunisia
                [3 ]Department of Gastrology, Mohamed Tahar Maamouri Hospital, 8000 Mrazga, Nabeul, Tunisia
                Author notes
                [& ]Corresponding author: Dr Bouassida Mahdi, Department of Surgery, Mohamed Tahar Maamouri Hospital, 8000 Mrazga, Nabeul, Tunisia, postal address: 8000 Mrazga, Nabeul, Tunisia
                Article
                PAMJ-12-62
                3428182
                22937202
                7d986e21-cdcd-44c9-8cb3-078c43c69543
                © Mahdi Bouassida et al.

                The Pan African Medical Journal - ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 20 May 2012
                : 24 June 2012
                Categories
                Case Report

                Medicine
                gastrointestinal bleeding,superior mesenteric artery,pancreatic pseudocyst,acute pancreatitis,emergency

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