Barcelona says coach Tito Vilanova has undergone throat surgery to treat the reappearance of a tumor on a saliva gland.

Vilanova had surgery to remove a tumor from a saliva gland in November 2011 when he was Pep Guardiola's assistant at the club.

Vilanova's assistant coach, Jordi Roura, will coach the team for Saturday's Spanish league game at Valladolid.