a transrectal biopsy and a transperineal biopsy. The urologist carrying out this procedure passes a hollow biopsy needle through the wall of the rectum into your prostate to collect a tissue sample.

The primary technique for diagnosing and monitoring prostate cancer, a transrectal biopsy, entails removing tissue from the prostate gland by inserting a thin needle through the rectal wall.

London: Springer-Verlag, 2017, pp.269–279. Han M, Chang D, Kim C, et al. Geometric evaluation of systematic transrectal ultrasound guided prostate biopsy. J Urol 2012; 188(6): 2404–2209. 5. Kaye DR, ...