peripheral zone


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peripheral zone

a large area of the prostate, just beneath the capsule, covering the posterior and lateral aspects and composed mainly of acinar glandular tissue. Its ducts drain into the prostatic urethra along most of its length.

peripheral zone

Abbreviation: PZ
The lateral border of the prostate gland. Most prostate cancers begin here. Synonym: peripheral zone of the prostate
See also: zone

optic zone diameter 

Diameter of the optic zone (front or back) of a contact lens measured to the surrounding junction. It is commonly specified in millimetres. Specifically, there are the back optic zone diameter (BOZD), formerly called back central optic diameter (BCOD), and the front optic zone diameter (FOZD). It is often difficult to measure these dimensions due to the blending of the line separating the zones, especially for the back optic zone diameter. The region surrounding the central optic zone is the peripheral zone. If there is more than one, the zones will be numbered first, second, etc., beginning with the zone immediately surrounding the central optic zone. The diameter of each peripheral zone is referred to as the back (or front) peripheral zone diameter (BPZD). See blending; total diameter; edge lift.
References in periodicals archive ?
39 4 + 4 = 8 4 + 3 = 7 PZ PSA: prostate-specific antigen; TRUS: transrectal ultrasound; RP: radical prostatectomy; PZ: peripheral zone.
Comparison of PSA pairs in Kaplan-Meier survival analysis (Wilcoxon) of 626 of 695 peripheral zone cancers with PSA follow-ups.
17) In these cases, the vast majority of tumours were found in the peripheral zone first and hence those descriptive papers do not capture the clinical entity.
The peripheral zone consists of most of the glandular tissue, and most tumors are of glandular origin; therefore, 70% of all tumors are located in the peripheral zone.
Zonal origin of prostatic adenocarcinoma: are there biologic differences between transition zone and peripheral zone adenocarcinomas of the prostate gland?
When Durkan and colleagues took a 2-core biopsy from the transitional zone and a 4-core biopsy from the peripheral zone in addition to a sextant biopsy, they found that the cancer detection rate alone increased by 19% in proportion to sextant biopsy.
The posterior lobe was considered to be that portion of the gland lying posterior to a plane and passing the ejaculatory ducts according to Moore,[3,4] Kahler,[5] and Strahan[6] and corresponds for the most part to the peripheral zone and the posterior half of the central zone, according to McNeal's classification.
The Indicated Mineral Resource is comprised of a higher grade central core and an adjacent, peripheral zone of lower grade material.
Design competition to work for the realization of a new building for the Polytech Annecy-Chambery school, engineering school of the University of Savoie, on the university website Bourget du Lac, including the definition of a scheme all the urban and landscape planning of the peripheral zone of the building to be constructed.
Systematic prostate sampling is performed and most often 12-core tissue samples of the lateral peripheral zone are obtained during each series of biopsies.
5 mm lesion deep within the peripheral zone of the mid-prostate on the left side.
detection of peripheral zone carcinoma at early stages.