Venezuelan President Hugo Chávez’s cancer may be worse than he’s letting on. Months after he underwent a second operation that he claimed cured him of cancer, he’s set to undergo another, to remove a possibly malignant lesion in his pelvis. In June Cuban doctors removed a “baseball-sized” tumor in Chávez’s abdominal area. He then went through chemotherapy and said he was cured. Chávez’s medical problems come just as the opposition has rallied behind Henrique Capriles to challenge the president’s 13-year rule.