Noncancerous growth of the cells lining the internal and external surfaces of the prostate gland. Having high-grade prostatic intraepithelial neoplasia may increase the risk of developing prostate cancer. Also called PIN.
( prah-STA-tik IN-truh-eh-pih-THEE-lee-ul NEE-oh-PLAY-zhuh )
Source: NCI Dictionary of Cancer Terms
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