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  • Title: Preservation of the pyloric ring has little value in surgery for pancreatic head cancer: a comparative study comparing three surgical procedures.
    Author: Fujii T, Kanda M, Kodera Y, Nagai S, Sahin TT, Hayashi M, Kanzaki A, Yamada S, Sugimoto H, Nomoto S, Takeda S, Morita S, Nakao A.
    Journal: Ann Surg Oncol; 2012 Jan; 19(1):176-83. PubMed ID: 21735323.
    Abstract:
    BACKGROUND: Pylorus-preserving pancreatoduodenectomy (PPPD) has replaced conventional pancreatoduodenectomy with a distal gastrectomy (cPD) as the most commonly performed procedure. However, there has been no evidence from prospective studies to indicate the overwhelming superiority of PPPD over cPD. A recent report revealed that resection of the pyloric ring reduced the incidence of delayed gastric emptying (DGE) in a randomized controlled trial. METHODS: In 158 patients with pancreatic head cancer, the perioperative outcomes and long-term nutritional consequences were retrospectively compared among three types of pancreatoduodenectomy: cPD; PPPD; and subtotal stomach-preserving pancreatoduodenectomy (SSPPD), in which the pyloric ring and duodenum were removed and more than 90% of the stomach was preserved. RESULTS: The incidence of DGE was significantly higher in the PPPD group than in the cPD and SSPPD groups (27.3 vs. 5.8 and 5.4%, respectively; P = 0.0012). The serum albumin concentration and total lymphocyte count at 1 year postoperatively were significantly higher in the SSPPD group than in the PPPD group (P = 0.0303 and P = 0.0203, respectively). The patients in the SSPPD group showed longer survival times than the patients in the cPD and PPPD groups (median survival times, 21.3, 17.1, and 17.7 months, respectively), although the differences did not reach statistical significance. CONCLUSIONS: Our results suggest that preservation of the pyloric ring without vagal innervation has little significance, and that SSPPD with better perioperative and long-term outcomes is more suitable as a standard procedure for patients with pancreatic head cancer.
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