Vilanova underwent a successful operation to remove a tumour found on his parotid gland, the largest of the human salivary glands, last November when he was Pep Guardiola’s number two.
But the 44-year-old, who took charge in the summer following Guardiola’s departure, has now suffered a relapse and had surgery today to remove the tumour.
A statement from the club read:
“Barcelona announce that it is has suspended the press conference from president Sandro Rosell planned for midday. As well as that, the media Christmas lunch has been cancelled.
“Later today the club will issue a further release. Until that time we will not make any announcement about this matter. We regret any inconvenience this decision may cause.”
Barcelona are expected to appoint a temporary replacement while Vilanova undergoes treatment, with Pep Guardiola being heavily linked with a return to the Nou Camp for the second half of the season.