A Rare Cause of Abdominal Pain in a Patient with Acute Necrotizing Pancreatitis.

Branco, C; Cardoso, M; Lourenço, C; Santos, L; Horta, V; Coimbra, E; Reis, J

http://hdl.handle.net/10400.10/2054

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INTRODUCTION: Walled-off necrosis (WON) is a potentially lethal late complication of acute pancreatitis (AP) and occurs in less than 10% of AP cases. It can be located in or outside the pancreas. When infected, the mortality rate increases and can reach 100% if the collection is not drained. Its treatment is complex and includes, at the beginning, intravenous antibiotics, which permit sepsis control and a delay in the therapeutic intervention, like drainage. Nowadays, a minimally invasive approach is advised. Depending on the location of the collection, computed tomography (CT)-guided drainage or endoscopic necrosectomy are the primary options, then complemented by surgical necrosectomy if needed. Infected WON of the abdominal wall has been rarely described in the literature and there is no report of any infection with Citrobacter freundii. CASE: We present the case of a 61-year-old man with necrotizing AP complicated by WON of the left abdominal wall, infected with Citrobacter freundii that was successfully treated with CT-guided percutaneous drainage and intravenous antibiotics. CONCLUSION: Infected WON accounts for considerable mortality and its location in the abdominal wall is rare; it can be treated with antibiotics and CT-guided drainage with no need for further intervention.