CARACAS  - Venezuela’s Hugo Chavez travels to Cuba on Friday for treatment of what he says is likely a malignant tumor as the leftist president faces a renewed cancer scare ahead of a tough reelection battle. “Nobody can say right now that it is another malignant tumor ... (but) the likelihood of malignancy is greater than the probability that it is not,” Chavez, 57, said during an event broadcast on state-run television. The firebrand leftist leader announced his plans to travel to Cuba during a cabinet meeting Thursday, saying that the operation could take place Monday or Tuesday.