Luke Donald is to have surgery to cure a long standing problem with his sinuses.Luke Donald is to have surgery to cure a long standing problem with his sinuses.The world No 2 admits he is suffering with his nose at present and claims it affected him again during the final two rounds in Dubai over the weekend when he finished in a tie-for-third at the World Tour Championship.The Chicago-based Englishman had teed-off on Sunday holding a share of the lead with Rory McIlroy who went on to win the tournament - five shots clear of Donald.The 34-year-old said: "My sinuses are all completely clogged up and every time I get a little bit run down they turn into infections."Hopefully the surgery will fix it. It's a pretty quick and easy operation."I don't like to make excuses but the last couple of days I've had the sinus issue again."I felt a little bit flat and unfortunately I couldn't get things going on Sunday."