“I can’t have cancer. That’s somebody else,” thought Richard Dennis when he was diagnosed with prostate cancer. Dennis, a retired Petersburg resident, had been active his entire life, walking two to three miles a day and working in his yard. “I’d never had a symptom, I hadn’t had health issues, and I didn’t take medication,” said Dennis. But a slowly elevating prostate-specific antigen (PSA) blood level suggested otherwise. PSA is a protein produced by cells of the prostate gland. A PSA test uses a blood sample to measure the level of PSA in a man’s blood. The PSA blood level is often elevated
