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  • Title: Pancreatectomy with major arterial resection after neoadjuvant chemoradiotherapy gemcitabine and S-1 and concurrent radiotherapy for locally advanced unresectable pancreatic cancer.
    Author: Amano R, Kimura K, Nakata B, Yamazoe S, Motomura H, Yamamoto A, Tanaka S, Hirakawa K.
    Journal: Surgery; 2015 Jul; 158(1):191-200. PubMed ID: 25900035.
    Abstract:
    BACKGROUND: Pancreatic cancer (PC) with arterial invasion is currently a contraindication to resection and has a miserable prognosis. METHODS: Seventeen patients with locally advanced PC involving the celiac axis and/or common hepatic artery (CHA) who received chemoradiotherapy (CRT) composed of gemcitabine, S-1, and external beam irradiation over the last 2 years were investigated. Thirteen patients underwent pancreatectomy with major arterial resection: 6 distal pancreatectomies with resection of the celiac axis, 4 total pancreatectomies with resection of both the celiac axis and the CHA, and 3 pancreatoduodenectomies with resection of the CHA. Preoperative arterial embolization and/or arterial reconstruction to prevent ischemic gastropathy and hepatopathy was performed in 7 of the 13 patients. RESULTS: Distant metastases were found in 3 patients after CRT. One patient did not consent to operation after CRT. The morbidity rate of the 13 patients who underwent surgery was 62% (8/13), but no deaths occurred. Although there were no responders on CT, >90% of tumor cells were necrotic on histopathology in 5 of 13 tumors after CRT. Invasion of the celiac axis remained in 5 tumors, and extrapancreatic plexus invasion remained in 8 tumors, but an R0 resection was achieved in 12 of 13 tumors. Lymph node metastases were found in 3 of 13 cases. The overall 1-year survival rate from commencement of CRT and resection was 12 of 13 patients. CONCLUSION: Neoadjuvant CRT containing gemcitabine and S-1 and subsequent pancreatectomy with major arterial resection for patients with locally advanced PC with arterial invasion were carried out safely with an acceptable R0 resection acceptable morbidity and mortality, and encouraging survival (12 of 13) at 1 year postoperatively.
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