下列哪项不是胰岛素瘤的声像图特点（  ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='27180' and id < 2251831 and id<>'2251831' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27180' and id > 2251831 and id<>'2251831' order by id asc limit 5