作者复习 Mayo 诊所4,286例前列腺腺癌。其中55例显然自导管发生。8例起源于尿道周围前列腺初级导管,有丰富的乳头。在膀胱镜下,肿瘤呈息肉样和绒毛状,或伴有尿道浸润。五年生存率(42.8％)似一般前列腺腺泡的腺癌。47例由前列腺 The author reviewed 4,286 prostate adenocarcinomas at the Mayo Clinic. Of these, 55 cases apparently occurred from the catheter. Eight cases originated from the primary catheter of the prostate around the urethra and had abundant nipples. Under cystoscopy, tumors are polypoid and villous, or accompanied by urethral infiltration. The five-year survival rate (42.8%) is similar to that of normal prostate acinar adenocarcinoma. 47 cases by prostate