AI Article Synopsis
- A 40-year-old woman was hospitalized for acute pancreatitis, and imaging revealed a cyst believed to be a pseudocyst.
- Over the years, the cyst initially decreased in size but later enlarged and showed signs indicating potential malignancy, leading to surgery.
- After surgery, the tumor was histologically identified as a mucinous cystadenoma, highlighting the rarity of such long-term cases of mucinous cystic neoplasms (MCNs).
Article Abstract
A 40-year-old woman was hospitalized because of acute pancreatitis. CT showed a monolocular cyst thought to be a pseudocyst. The patient was followed as an outpatient. The size of the cyst decreased 6 years later. Ultrasonography 10 years later demonstrated an enlarged cyst with a cyst-in-cyst formation. A tendency to increase in size and the irregular wall thickening indicated that the cyst was a malignant mucinous cystic neoplasm (MCN) and distal pancreatectomy was performed. The tumor was diagnosed histologically as a mucinous cystadenoma. A case of MCN resected after long-term follow-up is extremely rare. The present case is thought to be important for elucidation of the natural history of MCNs.
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