Jon Hamm having outpatient surgery on his vocal cord Actors Jon Hamm and Jennifer Westfeldt arrive for the 65th Primetime Emmy Awards at Nokia Theatre in Los Angeles on September 22, 2013. 23 (UPI) -- U.S. actor Jon Hamm is to undergo surgery to remove a polyp from his vocal cords, Gossip Cop reported Monday. 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.