Prostatic intraepithelial neoplasia

Prostatic intraepithelial neoplasia (PIN) is a precancerous lesion in the prostategland which is a precursor of [prostate cancer]. Microscopically, PIN is a collection of irregular cellswhich are fully contained within the glandstructure and have not spread to the surrounding tissue. This may be proven by the identification of basal cellsforming the supporting layer of the gland. PIN does not require specific therapy, but close follow-up with additional biopsiesis warranted. PIN may disappear, remain unchanged, or progress to prostate cancer, often over as many as ten years.

This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Prostatic+intraepithelial+neoplasia Wikipedia article Prostatic intraepithelial neoplasia.