Precisely delivered ultrasound could be an effective treatment for prostate cancer, with high-frequency sound waves heating and killing off cancer cells, a new study says.
The treatment killed off all prostate cancer cells in 76% of men who underwent a follow-up biopsy one year later, researchers said.In the procedure, MRI scans are used to precisely apply ultrasound to a man's prostate cancer, through a small catheter-like device inserted through the urethra.
For this study, 115 men with prostate cancer were recruited at 13 hospitals in five countries and given the ultrasound treatment, researchers said. The procedure can be performed in an outpatient facility in two or three hours, under general or spinal anesthesia. The men treated with ultrasound experienced a 92% decrease in average prostate size within a year, and a healthy decrease in PSA levels at five years. High PSA levels are a warning sign for prostate cancer.After five years, 92% of the men had control over their bladder and 87% had good erectile function. Incontinence and erectile dysfunction are two common side effects of prostate cancer surgery.
"Prostate cancer is the most common form of cancer in men, affecting one in eight men in their lifetime," he said. "We have more research to do, but if validated, has the potential to change the standard of care for thousands of men."
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