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Tseng I C, Yeh MM, YangCY, etal. NKX6-1 isanovelim- munohistochemical marker for pancreatic and duodenal neuroen- docrine tumors. Am J Surg Pathol, 2015,39(6) :850 -7.胃肠道神经内分泌肿瘤分为高分化神经内分泌肿瘤(WDNETs)及低分化神经内分泌癌(PDNECs),前者通常进行手术切除和(或)分子靶向治疗,而PDNECs通常采用化疗。NKX6