WRAL first reported the news, which was confirmed by the university.
Williams, 62, has a second tumor in his left kidney which could result in a second surgery in Oct., according to the report. The tumors were discovered during a routine physical earlier this month. Doctors have yet to determine if the tumor they removed Wednesday was cancerous, and the result of further tests could determine whether the second procedure is required, according to an ESPN.com report.
Wednesday’s procedure lasted 3 1/2 hours and was administered by Eric Wallen, a professor of urology at UNC.
“The surgery went well and according to plan,” Wallen said in a statement. “Coach Williams did great. I fully expect him to coach this season and for years to come. He could miss some practice time if we perform another procedure sometime in October, but he would be able to resume his coaching duties prior to the start of the regular season.”
Williams, who was inducted into the Naismith Memorial Basketball Hall of Fame in 2007, has dealt with previous ailments during prior seasons. He spent several weeks roaming the sideline with his left arm in a sling after undergoing surgery to repair a torn labrum in 2009, and in recent seasons Williams has dealt with unpredictable bouts of vertigo that have forced him to sit down for stretches of games.
Since leaving Kansas to return to his alma mater in 2003, Williams has led the Tar Heels to a 257-68 record and two national championships. North Carolina fell to Kansas in the Elite 8 in March.