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  • Title: Use of expandable metallic biliary stents in resectable pancreatic cancer.
    Author: Wasan SM, Ross WA, Staerkel GA, Lee JH.
    Journal: Am J Gastroenterol; 2005 Sep; 100(9):2056-61. PubMed ID: 16128952.
    Abstract:
    AIM: To compare the efficacy of metal versus plastic stents for biliary strictures in patients with surgically resectable pancreatic cancer. METHODS: The medical records at MD Anderson Caner Center from September 2001 to May 2004 were reviewed. Fifty-five patients were identified to have either a metal biliary stent (13 patients, group A) or a plastic biliary stent (42 patients, group B) and subsequently went to surgery. These two groups were compared with regards to number of stents placed prior to surgery, time period between the last stent and surgery, and operative and postoperative complications. RESULTS: Of the 13 patients in group A, 12 had pancreaticoduodenectomy performed and one had exploration only due to the peritoneal metastatses discovered at the time of surgery. Of the 12 patients with pancreaticoduodenectomy, 10 had pancreatic adenocarcinoma, 1 intraductal papillary mucinous tumor, and 1 ampullary cancer. Only 2 patients required an additional endoscopic retrograde cholangiopancreatography (ERCP) after initial metal stent placement until surgery. The average time between last stent placement and surgery was 106.5 days. Of the 42 patients in group B, 35 had pancreaticoduodenectomy and 7 had either palliative surgery or exploration due to metastatic diseases discovered at the time of surgery. Of the 35 patients, 27 had pancreatic adenocarcinoma, 5 ampullary cancer, 1 neuroendocrine tumor, 1 microcystic adenoma, and 1 autoimmune pancreatitis. Sixteen patients (38%) in group B required 3 or more ERCPs with plastic stents prior to surgery. The average time between last stent placement and surgery was 56.4 days. Preoperative chemoradiation was given to all 13 patients in group A and 31 of 42 patients in group B. There were no stent-related intra- or postoperative complications in both groups. Two of 13 patients (15%) with metal stents versus 39 of 42 patients (93%) with plastic stents, however, developed either cholangitis or cholestasis due to stent occlusion while waiting for surgery. CONCLUSIONS: Contrary to the belief that metal stents are contraindicated for patients with surgically resectable pancreatic cancer, our study demonstrated that metal stents provided a longer patency rate, fewer ERCP sessions, and fewer episodes of cholangitis without adding any intra- or postoperative complications. Therefore, metal stents should be considered for patients with resectable pancreatic cancer, especially if surgery is not immediately planned as more patients are now receiving preoperative chemoradiation.
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