The Food and Drug Administration's recent decision to limit the use of
silicone gel breast implants was surrounded by a great deal of mislea
ding information in the popular press. This article outlines the most
relevant information available in the literature on the most often rai
sed safety issues, including the carcinogenicity of silicone, speculat
ion on a possible connection between silicone and autoimmune disease,
the significance of gel bleed, and the effect of implants on mammograp
hy. In this attempt to better educate primary care physicians, we expl
ain what is known about silicone gel breast implants so physicians can
more wisely counsel their patients, who may be needlessly frightened
by inaccuracies they have heard.