BACKGROUND: To describe the precise location of peripheral zone (PZ) prostate cancers at various stages of development and to demonstrate their pattern of intraprostatic spread from their site of origin. METHODS: PZ cancers defined as cancers located in peripheral zone (PZ) including the anterolateral part of PZ, were identified from radical prostatectomy specimens. PZ cancers morphometric histopathological study included largest surface area, volume and spatial distribution. RESULTS: Out of 188 PZ cancers, 179 were <4 cm(3) and 168 <2 cm(3). PZ cancers were still confined to their zone of origin for volumes <2 cm(3). Between 2 and 4 cm(3), some cancers partially spread into the transition zone or anterior fibromuscular stroma. Sixty-four and 90% of PZ cancers <4 cm(3) were located in the lower and posterior half of the gland respectively. Ten percent were located in the anterior horn of PZ. Overall, non-index (second) cancers were located in the ipsi and contolateral side of the index cancer (largest) in 31% and 69% of cases, respectively. Cancers <2 cm(3) were confined to one lobe in 164 of 168 (98%) cases and not confined in 3 out of 11 (27%) cancers 2-4 cm(3). On vertical axis, only cancers >or=2 cm(3) involved both apex and base. CONCLUSIONS: PZ cancers contours and locations are predictable and conform to histological zone boundaries if <2 cm(3) in volume. Knowledge of PZ cancers origin and pattern of spread in PZ are of importance for imaging diagnosis, guidance for biopsy and focal therapy.
BACKGROUND: To describe the precise location of peripheral zone (PZ) prostate cancers at various stages of development and to demonstrate their pattern of intraprostatic spread from their site of origin. METHODS: PZ cancers defined as cancers located in peripheral zone (PZ) including the anterolateral part of PZ, were identified from radical prostatectomy specimens. PZ cancers morphometric histopathological study included largest surface area, volume and spatial distribution. RESULTS: Out of 188 PZ cancers, 179 were <4 cm(3) and 168 <2 cm(3). PZ cancers were still confined to their zone of origin for volumes <2 cm(3). Between 2 and 4 cm(3), some cancers partially spread into the transition zone or anterior fibromuscular stroma. Sixty-four and 90% of PZ cancers <4 cm(3) were located in the lower and posterior half of the gland respectively. Ten percent were located in the anterior horn of PZ. Overall, non-index (second) cancers were located in the ipsi and contolateral side of the index cancer (largest) in 31% and 69% of cases, respectively. Cancers <2 cm(3) were confined to one lobe in 164 of 168 (98%) cases and not confined in 3 out of 11 (27%) cancers 2-4 cm(3). On vertical axis, only cancers >or=2 cm(3) involved both apex and base. CONCLUSIONS: PZ cancers contours and locations are predictable and conform to histological zone boundaries if <2 cm(3) in volume. Knowledge of PZ cancers origin and pattern of spread in PZ are of importance for imaging diagnosis, guidance for biopsy and focal therapy.
Authors: S Gill; J Thomas; C Fox; T Kron; A Thompson; S Chander; S Williams; K H Tai; G Duchesne; F Foroudi Journal: Br J Radiol Date: 2011-10-05 Impact factor: 3.039
Authors: Luc Furic; Liwei Rong; Ola Larsson; Ismaël Hervé Koumakpayi; Kaori Yoshida; Andrea Brueschke; Emmanuel Petroulakis; Nathaniel Robichaud; Michael Pollak; Louis A Gaboury; Pier Paolo Pandolfi; Fred Saad; Nahum Sonenberg Journal: Proc Natl Acad Sci U S A Date: 2010-08-02 Impact factor: 11.205
Authors: Weranja Ranasinghe; Daniel D Shapiro; Miao Zhang; Tharakeswara Bathala; Nora Navone; Timothy C Thompson; Bradley Broom; Ana Aparicio; Shi-Ming Tu; Chad Tang; John W Davis; Louis Pisters; Brian F Chapin Journal: Nat Rev Urol Date: 2021-04-06 Impact factor: 14.432