Introduction: Pancreatico-peritoneal fistula is a rare and clinically challenging cause of recurrent ascites. We report a patient with recurrent ascites secondary to a pancreatic duct leak, and its successful treatment using Coseal® surgical sealant delivered endoscopically. Case Report: A 42-year-old male with a history of alcoholism and presumed alcoholic cirrhosis, presented with worsening ascites, abdominal pain, weight loss, and anorexia. One month prior, the patient underwent outpatient paracentesis, and was started on a diuretic regimen of spironolactone 100 mg and furosemide 40 mg daily. On physical exam, he was febrile and cachectic, with abdominal protuberance and tenderness. Laboratory tests revealed WBC 17.8 K/uL, albumin 2.8 g/dL, total bilirubin 0.9 mg/dL, direct bilirubin 0.4 mg/dL, alkaline phosphatase 161 U/L, AST 75 U/L, and ALT 40 U/L. Paracentesis indicated bacterial peritonitis (5,167 WBC/uL, 99% PMNs), and intravenous cefotaxime was initiated. Despite antibiotics, the leukocytosis and symptoms persisted. CT scan revealed three pancreatic pseudocysts, scattered pancreatic calcifications, and a 5-mm pancreatic duct in the tail, along with large ascites but no evidence of cirrhosis. Subsequent large volume paracentesis revealed elevated ascitic fluid amylase (43,869 U/L), and cultures isolated Pseudomonas aeruginosa. Given the CT findings and the high ascitic fluid amylase, the diagnosis of a pancreatico-peritoneal fistula was suspected. ERCP revealed a moderate pancreatic duct stenosis in the body with a small stone proximal to the stricture, as well as a pancreatic duct leak originating from the tail. A 7 Fr x 11 cm straight pancreatic stent was successfully placed and antibiotic coverage with imipenem was maintained, yet the patient's symptoms and ascites with high amylase content persisted. Repeat ERCP re-demonstrated extravasation of contrast from the pancreatic tail. Coseal® surgical sealant was then injected through a catheter into the tail of the pancreatic duct for closure, and an 8.5 Fr x 14-cm pancreatic stent was placed. Within days, the patient's symptoms improved, and he remains stable at 3 months after fistula closure. Conclusion: Ascites from a pancreatic-peritoneal fistula is rare, and it poses a significant diagnostic and therapeutic challenge. Given the patient's alcohol history, the true etiology of his ascites and peritonitis was initially misdiagnosed. Once properly recognized, the pancreatico-peritoneal fistula was successfully closed by applying a surgical sealant delivered endoscopically.
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