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  • Title: Value of additional endoscopic ultrasonography for surveillance after surgical removal of intraductal papillary mucinous neoplasms.
    Author: Kamata K, Takenaka M, Minaga K, Omoto S, Miyata T, Yamao K, Imai H, Nakai A, Tanaka H, Chiba Y, Watanabe T, Sakurai T, Nishida N, Chikugo T, Matsumoto I, Takeyama Y, Kitano M, Kudo M.
    Journal: Dig Endosc; 2018 Sep; 30(5):659-666. PubMed ID: 29675938.
    Abstract:
    BACKGROUND AND AIM: This study evaluated the utility of endoscopic ultrasonography (EUS) combined with contrast-enhanced harmonic EUS (CH-EUS) for surveillance of the remnant pancreas after surgery for intraductal papillary mucinous neoplasm (IPMN). METHODS: This was a single-center, retrospective, descriptive study. A total of 134 consecutive patients who underwent surgical resection for IPMN between April 2009 and March 2015 were evaluated. Rates of recurrence and development of IPMN-concomitant pancreatic ductal adenocarcinoma (PDAC) during follow up were assessed. Clinical findings of patients with recurrence or development of PDAC were also evaluated. RESULTS: Of 134 resected IPMN 56 (41.8%) and 78 (58.2%) were classified as benign and malignant, respectively. Patients were followed up for a median of 29 months, 33 (24.6%) by both contrast-enhanced computed tomography (CE-CT) and EUS, and 101 (75.4%) by computed tomography (CT) alone. Thirteen patients (9.7%) showed tumor recurrence, five with intra-pancreatic recurrence and eight with extra-pancreatic metastases. An enhancing mural nodule within the dilated main pancreatic duct was successfully detected by EUS in one patient, but not by CE-CT. Two patients developed IPMN-concomitant PDAC during follow up. EUS combined with CH-EUS successfully detected small IPMN-concomitant PDAC in two patients, whereas these lesions were not detected by CT. CH-EUS was useful for better visualization of the margins of IPMN-concomitant PDAC in one of these two patients. CONCLUSION: Endoscopic ultrasonography combined with CH-EUS may improve follow up of patients with resected IPMN.
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