Abstract
In the United States, cancer centers commonly advertise clinical services directly to the public. Potential benefits of such advertising include informing patients about available treatments and reducing the stigma of cancer.1,2 Potential risks include misleading vulnerable patients and creating false hopes, increasing demand for unnecessary tests and treatments, adversely affecting existing physician-patient relationships, and increasing health care costs.3,4 Understanding the trends in the advertising spending of cancer centers and the characteristics of the centers that spend the most can inform the debate about the effect of their advertisements. We hypothesized that advertising spending by cancer centers has increased and is concentrated among for-profit cancer centers.