<unk>  <unk>  is a non-invasive lesion in the prostate gland which is though to be a precursor to prostate cancer. Microscopically,<unk>  is a collection of irregular cells which are fully contained within the gland structure and have not spread to the surrounding tissue. This may be proven by the identification of basal cells forming the supporting layer of the gland.<unk>  does not require specific therapy, but close follow-up with additional biopsies is warranted.<unk>  may disappear, remain unchanged, or progress to prostate cancer, often over as many as ten years.
Prostatic intraepithelial neoplasia
Penile carcinoma in situ
Benign prostatic hyperplasia
Chronic bacterial prostatitis
Prostate cancer pathophysiology
Carcinoma of the penis
Urethral cancer
Radiation proctitis