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Nearly 200,000 American men are diagnosed with prostate cancer each year. And treatments like radiation and surgery often target the entire prostate, even when only part of the gland is cancerous. Aggressive treatment can result in urinary incontinence or loss of potency in some men. But Duke University Medical Center experts say a pinpointed new surgery called focal therapy is effective in targeting only the cancerous portion of the prostate, sparing surrounding healthy tissue ...