尿道扩张联合开放手术或腔内电切术是前列腺切除术后排尿困难较为有效的治疗方法.Urethral dilatation combined open operation or transurethral electroresection is an effective means to dysuria after prostatectomy.两个与心脏相连的主静脉叫做大静脉或腔静脉.The two main veins that connec...