Abstract
Pancreatic mucinous cystic neoplasm (MCN) rarely ruptures because of their surrounding fibrotic capsules and has never been reported with detailed information regarding prerupture and postrupture states. We report a case of MCN rupture where performed emergency surgery was performed while waiting for elective surgery. A 54-year-old woman was referred to our department for a pancreatic cystic tumor with slight abdominal pain. A cystic tumor with a nodular lesion was found, with a contrast effect measuring 78 mm in diameter. On day 21, the patient visited our hospital complaining of increased abdominal pain, but few signs of peritonitis were observed. Tests conducted revealed moderate ascites, marginal shrinkage of the cyst diameter, and a slight elevation of inflammatory markers. We suspected an MCN rupture and immediately performed distal pancreatectomy. Brown turbid ascites and rupture of the anterior wall of the cyst were observed. In the ascites, amylase levels were not elevated, and bacterial cultures were negative. The histopathological diagnosis was noninvasive mucinous cystadenocarcinoma. At 9 months after surgery, she started chemotherapy because of a recurrence of the peritoneal dissemination. This case provided valuable insight into the rupture of MCNs using thorough imaging techniques, laboratory, and physical findings before and after rupturing.
Published Version
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