患者，女，69岁。持续性黑便伴乏力3月余，查体示:右下腹有一6cm×5cm×5cm包块，表面不平，质硬，边缘不整齐，触痛（+)。该患者最可能的诊断是

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='30494' and id < 2462424 and id<>'2462424' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='30494' and id > 2462424 and id<>'2462424' order by id asc limit 5