Abstract
With the increasing detection of pancreatic cysts, many centers have applied endoscopic ultrasound-guided pancreatic cyst ablation (EUS-PCA), even in intraductal papillary mucinous neoplasms (IPMNs) of the pancreas based on early promising outcomes. However, long-term effects of ethanol ablation have been rarely reported, especially regarding oncologic outcomes. We report eight cases of malignancy conversion after EUS-PCA in patients with IPMNs who had worrisome features. Moreover, two patients showed tumor spillage or peritoneal seeding (carcinomatosis) after EUS-PCA. Endoscopic ultrasound-guided pancreatic cyst ablation must not be performed as a treatment for IPMNs, considering adverse results such as tumor spillage and the lack of oncological therapeutic effect.
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