患者，35岁，在行左上颌结节麻醉时出现左颊面部血肿。其原因是

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SQL Error: select id,body,options from ***_enewstiku where sourceid='32249' and id < 2568047 and id<>'2568047' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='32249' and id > 2568047 and id<>'2568047' order by id asc limit 5