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Transition zone (TZ) 5% The transition zone surrounds the proximal urethra. [2] ~10–20% of prostate cancers originate in this zone. It is the region of the prostate gland that grows throughout life and causes the disease of benign prostatic enlargement. [6] [7] Anterior fibro-muscular zone (or stroma) —
[47]: 694 In BPH, the majority of growth occurs in the transition zone (TZ) of the prostate. [47]: 694 In addition to these two classic areas, the peripheral zone (PZ) is also involved to a lesser extent. [47]: 695 Prostatic cancer typically occurs in the PZ. However, BPH nodules, usually from the TZ are often biopsied anyway to rule out cancer ...
The prostatic urethra, the widest and most dilatable part of the urethra canal, is about 3 cm long.. It runs almost vertically through the prostate from its base to its apex, lying nearer its anterior than its posterior surface; the form of the canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest below, where it joins the membranous portion.
Diseases of the bladder and prostate are common health conditions that affect many individuals. Some disorders can cause morbidity and even mortality. [1] Whilst bladder diseases can affect both sexes, prostate diseases are limited to those individuals with male anatomy. [2] [3]
The majority of treatable/treated cancers are of Gleason scores 5-7 and are detected due to biopsy after abnormal digital rectal exam or prostate specific antigen evaluation. The cancer is typically located in the peripheral zone usually the posterior portion, explaining the rationale of performing the digital rectal exam. [citation needed]
Prostate cancer is the most diagnosed cancer in men in over half of the world's countries, and the leading cause of cancer death in men in around a quarter of countries. [92] Prostate cancer is rare in those under 40 years old, [93] and most cases occur in those over 60 years, [2] with the average person diagnosed at 67. [94]
The scope is passed through the urethra to the prostate where surrounding prostate tissue can then be excised. There are two types of modalities: There are two types of modalities: Monopolar TURP: A monopolar device utilizing a wire loop with electric current flowing in one direction (thus monopolar) can be used to excise tissue via the ...
Endogenous stones: These are small stones formed within the acini of the prostate. They have a higher correlation with age. [3] Extrinsic stones: These stones are usually larger and formed due to the reflux of urine into the prostate. [3] The exact mechanism of the development of prostatic calculi is still unclear. [3]
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