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 ?
Discrimination of prostate cancer from normal peripheral zone and central gland tissue by using dynamic contrast-enhanced MR imaging.
Likewise, death is central for war, but life is on the low peripheral zone related to peace, with both low frequency and rank.
Comparison of PSA pairs in Kaplan-Meier survival analysis (Wilcoxon) of 626 of 695 peripheral zone cancers with PSA follow-ups.
DWI is decisive for evaluating the peripheral zone (PZ) as is T2-WI for the transition zone (TZ).
The left base peripheral zone lesion was targeted using the Visualase software and 4 transperineal biopsy cores were obtained.
The standard approach to prostatic biopsy is to biopsy each sextant of the prostate and in addition to sampling the peripheral zone at apex laterally and the base (10).
The joined sheet has a fixed inner peripheral zone bonded to an opening's peripheral zone defining the first opening and a distal front zone extending forward from the front zone of the pad and releasably attached to the supporting sheet by means of fastener means.
1-3] This increase was attributed to an early detection of localized carcinomas[4] that included carcinomas arising not only from the peripheral zone (PZ), but also those arising from the transition zone (TZ) with concomitant involvement of the PZ.
Political independence has been achieved in previously colonized regions, but the states in the peripheral zone are subordinate to the U.
2) It has been observed that the vast majority of prostate cancers originate in the peripheral zone of the gland and thus over time most men with prostate cancers will exhibit an abnormal DRE.