临床上将胆管梗阻的部位分为哪几段

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SQL Error: select id,body,options from ***_enewstiku where sourceid='24992' and id < 2128565 and id<>'2128565' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='24992' and id > 2128565 and id<>'2128565' order by id asc limit 5