British snooker star Ali Carter is battling lung cancer.

The world number 13, who has twice finished runner-up in the sport's World Championship, is set to undergo an intensive course of chemotherapy after doctors diagnosed him with the disease, just a year after he was given the all-clear from testicular cancer.

Carter, 34, who also suffers from Crohn's disease, underwent surgery last year (13) and went on to resume his snooker career. He has pulled out of a number of his upcoming commitments to concentrate on his latest health battle.