The celebrity news website categorized this as a routine outpatient procedure and said the polyp is not cancerous.
No other information about the actor's condition was immediately available.
The "Mad Men" star attended the Emmy Awards show in Los Angeles Sunday night, but lost the Best Actor in a Drama prize to "The Newsroom" star Jeff Daniels.
Yosemite climber falls 30 feet, suffers major injuries
Turkey considering to use pistachios to heat country’s first eco-city