Tumor control persists four to six years, could be treatment of choice for certain patients
Massachusetts General Hospital (MGH) researchers have shown that radiofrequency ablation (RFA) – a minimally invasive way of destroying tissue – is an effective, longlasting treatment for small kidney tumors in selected patients. In a followup to research published in 2003, the investigators found that RFA treatment of renal cell carcinoma, the most common kidney cancer, continued to be successful 4 to 6 years after administration. The report appears in the July issue of the Journal of Urology. "This study shows, for the first time, that this is a very effective long-term treatment," says W. Scott McDougal, MD, chief of Urology at MGH and lead author of the study. Renal cell carcinoma will be diagnosed in almost 32,000 Americans this year and is most frequently treated with surgical removal through either an open or laparoscopic procedure.
RFA delivers heat generated by electrical energy to sites within the body through a thin needle, similar to probes used in biopsy procedures. Placement of the probe is guided by CT scan, ultrasound or other imaging techniques. Widely used to treat cardiac arrhythmias, RFA is also being investigated for destruction of small liver tumors and has been used for more than ten years to treat a benign bone tumor called osteoid osteoma.
Sue McGreevey | EurekAlert!
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
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