恶性肿瘤的诊断，最重要的依据是（      ）

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25186' and id < 2135940 and id<>'2135940' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25186' and id > 2135940 and id<>'2135940' order by id asc limit 5