等切除而区分。按照日本厚生劳动省胰头癌标准手术与扩大手术RCT研究班的定义[9],扩大手术是指第1站及14a、14b、14c、14d、14v、16a2-inter、16a2-pre、16b1-inter、16b1-pre、16b1-latero淋巴结清扫,并行肝总动脉、肠系膜上动脉、腹腔干全周神经丛及右腹腔神经节切除的胰腺切除术。
本组资料显示,行扩大根治术患者平均生存期可达到10个月,略高于根治术总体平均生存期(9.1333个月),差异并无统计学意义,且腹痛、进食困难等症状均得以缓解,提高了生活质量,与文献报道一致[10]。这在一定程度上提示,行扩大根治术切除的不仅仅是周边受累脏器及肿大淋巴结,同时也将那些潜在的卫星转移灶、受累的淋巴组织及神经丛等一并予以切除,减少了短期内复发转移的危险并缓解了患者的疼痛[11-12]。因此我们认为,对于有明显胰周淋巴结肿大和周围脏器侵犯的患者,在手术技术及患者情况允许的条件下,应尽量行扩大根治术;胰周筋膜、淋巴组织及神经丛等清扫的程度影响到根治术的效果,在条件允许的范围下应尽量予以切除。
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