A study presented in early March at the Society of Interventional Radiology meeting held in Seattle asked a straight-forward question: For small tumours of the kidney detected at an early stage, what method works just as well or better at eliminating them? What patient would be best suited for such a procedure.

• Dr. J. Louis Hinshaw, Assistant Professor of Radiology in the abdominal division of the University of Wisconsin School of Medicine and Public Health.