Normal prostate: chestnut shape, transverse diameter 4cm, vertical diameter 3cm, anteroposterior 2cm. A longitudinal superficial channel at the center of the back of corpus glandulare prostate is central fissure of prostate
Benign prostatic hyperplasia: prostatoplasia I tumid prostate, egg size, flat back, shallow central fissure
Benign prostatic hyperplasia: prostatoplasia II. More tumid prostate, duck egg size, central fissure disappeared.
Benign prostatic hyperplasia: prostatoplasia III. Most tumid prostate, hard, goose egg size, inferior end can not be reached
The earlier period of rectum cancer: a hard knub can be touched
The later period of rectum cancer: a bigger knub can be touched, irregular shape, and much harder than earlier period. It’s the