[[Image:Prostatelocation.jpg|thumb|100px|right|Location of the prostate gland]]
[[Image:Prostatelocation.jpg|thumb|100px|right|Location of the prostate gland]]
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The prostate gland is an organ present only in males. It lies just below the bladder, and the ''urethra'' (the tube that carries urine) runs directly through it. This fact is important in explaining many of the symptoms of the disease. The gland itself is part of the male reproduction system and participates in semen production. It is dependent on testosterone and other male hormones.
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The prostate gland is an organ present only in males. It lies just below the bladder, and the ''urethra'' (the tube that carries urine) runs directly through it (although in some other mammals, the urethra runs around, rather than through, the prostate<ref>R. Ganzer et al, "Muscle systems of the lower urinary tract of the male rhesus monkey (Macaca mulatta): histomorphology and 3-dimensional reconstruction," ''J. Urol.'' 2002 Oct;168(4 Pt 1):1603-7 [http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=12352465&dopt=AbstractPlus]</ref>). This fact is important in explaining many of the symptoms of the disease. The gland itself is part of the male reproduction system and participates in semen production. It is dependent on testosterone and other male hormones.
==Epidemiology==
==Epidemiology==
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==References==
==References==
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<references/>
*Jemal, A, Siegel R; Ward E, et al. Cancer statistics, 2006. CA Cancer J Clin 2006; 56:106.
*Jemal, A, Siegel R; Ward E, et al. Cancer statistics, 2006. CA Cancer J Clin 2006; 56:106.
*U.S. Cancer Statistics Working Group. United States Cancer Statistics: 2003 Incidence and Mortality (preliminary data). Atlanta (GA): Department of Health and Human Services, Centers for Disease Control and Prevention, and National Cancer Institute; 2006.
*U.S. Cancer Statistics Working Group. United States Cancer Statistics: 2003 Incidence and Mortality (preliminary data). Atlanta (GA): Department of Health and Human Services, Centers for Disease Control and Prevention, and National Cancer Institute; 2006.