中年或中年以上患者，近期出现排便习惯改变或血便，最有意义的检查是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='29234' and id < 2379272 and id<>'2379272' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='29234' and id > 2379272 and id<>'2379272' order by id asc limit 5