What are the distinct zones in the anatomy of the prostate relevant to chronic bacterial prostatitis (CBP)?

Updated: Jan 15, 2019
  • Author: Samantha D Kraemer, MD; Chief Editor: Edward David Kim, MD, FACS  more...
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Answer

Although the prostate functions as a single glandular structure, it is divided anatomically into the following three distinct zones:

  • The transitional zone surrounds the prostatic urethra proximal to the seminal colliculus (verumontanum), where ejaculatory ducts empty into the urethra.
  • The central zone encases the ejaculatory ducts and runs toward the base of the bladder.
  • The peripheral zone extends anterolaterally proximal to the verumontanum and then makes up the bulk of the gland distal to the verumontanum. A fibromuscular stroma exists anterior to the gland, running from the bladder neck to the striated sphincter.

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