Anatomic Imaging of the Prostate

Table 1

Table summarizing the histologic composition and embryologic origins of the various zones of the prostate gland.

	Central zone (CZ)	Transition zone (TZ)	Peripheral zone (PZ)
Volume of normal prostate (%)	25	5	70
Embryologic origin	Wolffian duct	Urogenital sinus	Urogenital sinus
Epithelium	Complex, large polygonal glands	Simple, small rounded glands	Simple, small rounded glands
Stroma	Compact	Compact	Loose
Origin of prostatic adenocarcinoma (%)	5	25	70
Benign prostatic hyperplasia (%)	—	100	—