It typically begins in the posterior peripheral zone of the prostate and can be detected using a digital rectal examination.

它一般起源于前列腺外周区，可以通过直肠指诊检查。

Have you ever had a digital examination before? No.

你以前做过指诊吗? 没有。

In children, intussusception can sometimes be felt by finger while doing a digital rectal examination, but a definite diagnosis often requires imaging techniques.

给患儿做直肠指检，有时可发现肠套叠，但确诊通常需要影像学检查。