RadioFrequency devices such as Thermage have not yet been approved for fat reduction although it is likely the most promising technology for this purpose right now. Interestingly, one of the issues of concern with early radio-frequency Thermage used for skin-tightening on the face was that it was causing a loss of facial fat volume. RadioFrequency in its different forms is now being investigated for use in fat reduction in ways that will likely become quite significant. In fact, RadioFrequency is even being investigated for its use as a treatment for breast cancer. The fact is that RadioFrequency is being shown to be a technology that is extremely safe and extremely accurate. Based on my own experience and knowledge my sense is that RadioFrequency is the future of 'less-invasive' fat reduction. Other technologies, in my experience, such as Zeltiq, are leading to significant disappointment among patients.
That said, when it comes to gynecomastia- an enlarged breast in a man- has multiple etiologies. The breast is both gland and fat. For patients where the bulk of the issue is an enlargement of the breast gland itself, no treatment is currently as effective as surgery to physically remove this gland. For patients where the bulk of the cosmetic deformity is due to fat, liposuction is currently the hallmark of treatment and it is this subset of patients- the majority of patients complaining about this deformity, who will benefit from fat reduction from external energy devices like Thermage. I hope this long winded explanation helps! Good Luck! Scott Newman, MD FACS