患者，男，40岁，喉结两侧各有1个3cm×2cm×1cm，表面光滑，质地韧，无压痛，随吞咽上下活动的肿物。为明确诊断，应首选的检查方法是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='28710' and id < 2341713 and id<>'2341713' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='28710' and id > 2341713 and id<>'2341713' order by id asc limit 5