Freezing tumors is an effective way to treat a cancer patients pain, preliminary results of a new study show.
The study, which appears in the March 2005 issue of the American Journal of Roentgenology, found that cryoablation relieved the pain of four patients who had very advanced disease. The patients had various types of cancer that had spread to areas outside the abdomen organs, said Damian E. Dupuy, MD, professor of diagnostic imaging at Brown Medical School in Providence, RI. These patients were not candidates for surgery because the tumors were too close to critical structures or the patient had multi-focal disease. In addition, chemotherapy or radiation therapy had not been successful in controlling these areas of symptomatic disease.
Each patient underwent CT-guided percutaneous cryoablation. Cryoapplicators were inserted into the tumor area, and the tumor and adjacent areas were frozen. The freezing process kills cancer cells, small sensory nerves cells and inflammatory tissue, thus easing the patients pain, Dr. Dupuy said. "We can watch the ice ball form on CT as it is being done to ensure the appropriate area is being treated," he said.
Jason Ocker | EurekAlert!
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