Article Photos: Aides: Chavez in tough fight, may miss swearing-in 2/5

A person holds up images of Venezuela's President Hugo, right, and Venezuela's independence hero Simon Bolivar as people gather to pray for Chavez at Simon Bolivar square in Caracas, Venezuela, Tuesday, Dec. 11, 2012. Doctors began operating on Chavez  in Cuba, his government said, after his cancer reappeared despite a year and a half of surgeries and treatments. (AP Photo/Fernando Llano)