Victoria Advocate, March 10, 2008 VICTORIA - This article about radiofrequency ablation to treat tumors, an alternative to surgery for treatment of small tumors, quotes Victoria radiologist Santiago Marroquin who said that despite a five centimeter limit on the size of tumors normally treated by RFA, "A lot of people in university settings, like at UTMB, they'll go up to six or seven centimeters. The limitations are based on the equipment. There aren't probes that span more than five centimeters."