摘要:<正>结直肠癌的发病率近几年呈逐年上升趋势,已成为我国的主要恶性肿瘤之一。Lynch综合征(lynch syndrome,LS),又称为遗传性非息肉性结直肠癌(hereditary nonpolyposis colorectal cancer,HNPCC),其特征是家族性聚集,发病年龄较早,多见于右半结肠,伴同时性或异时性的肠外恶性肿瘤,特别是子宫内膜癌、胃癌、卵巢癌等。早在1913年Warthin
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