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. 2017 Apr 27;10:71–80. doi: 10.2147/MDER.S135378

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© 2017 Woo and Gonzalez. This work is published and licensed by Dove Medical Press Limited

The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Prostate zonal anatomy.

Notes: (A) Young male with minimal TZ hypertrophy. The preprostatic sphincter and periejaculatory duct zone (CZ) are defined. (B) Older male with TZ hypertrophy, which effaces the preprostatic sphincter and compresses the periejaculatory duct zone. Reprinted from Int J Radiat Oncol Biol Phys, 63(2), McLaughlin PW, Troyer S, Berri S, et al, Functional anatomy of the prostate: implications for treatment planning, 479–491, Copyright (2005), with permission from Elsevier.13

Abbreviations: CZ, central zone; SV, seminal vesicle; TZ, transition zone; AFS, anterior fibromuscular stroma; PZ, peripheral zone.