Oxygen levels in prostate tumors may predict treatment success

This study looked at oxygen levels inside prostate tumors in 186 men with early-stage prostate cancer. Researchers wanted to see if low oxygen (hypoxia) makes standard treatments like radiation less effective and increases the risk of cancer spreading. Participants had a special needle electrode placed through the rectum to measure oxygen before starting radiation or hormone therapy. The goal is to better understand why some prostate cancers come back and to guide future treatments that target low oxygen areas.