患者 ,男 ,6 9岁 ,病案号 5 746 3 ,主因无明显诱因出现不规则血便半月住院治疗。查体 :浅表淋巴结不大 ,心肺正常 ,肝脾肋下未及 ;肛诊 :ＣＫ位 ,距肛缘 3ｃｍ ,7～ 8点钟触及 3× 5ｃｍ肿块 ,肿块突出肠腔 ,边界不清 ,质地硬 ,呈结节状 ,指套有血迹。辅检 :胸片、腹部Ｂ超结 The patient, male, 6 9 years old, case number 5 746 3 , was hospitalized for a half month of irregular blood disorder due to no obvious incentive. Physical examination: Superficial lymph nodes, normal cardiopulmonary, liver and spleen are not under the ribs; anal diagnosis: CK position, 3cm from the anal verge, 7～8 o’clock touched 3×5cm tumor, the tumor protrudes into the intestine, the boundary is not clear, The texture is hard and nodular. Fingers are covered with blood. Secondary examination: chest and abdomen B-ultrasound