Definitions for "Prostatic Intraepithelial Neoplasia"
Abnormal tissue that appears as a hypoechoic lesion indistinguishable from carcinoma.
PIN. Noncancerous growth of the cells lining the internal and external surfaces of the prostate gland. It is an important sign that prostate cancer may develop.
Suspicious” prostate cells, that is, cells that are not clearly cancerous but are not quite normal, either. These are classified as and can be either low-grade or high-grade. Low-grade PIN does not necessarily lead to prostate cancer. High-grade PIN carries a 30 to 50 percent chance of developing into prostate cancer.