Argentina's President Cristina Fernandez de Kirchner speaks next to an image of former first lady Eva Peron during a ceremony at the Casa Rosada Presidential Palace in Buenos Aires, December 28, 2011. President Fernandez de Kirchner will be operated on for thyroid cancer in January, a government spokesman said on December 27, 2011. The carcinoma has not metastasized, the spokesman said at a news conference. REUTERS/Marcos Brindicci (ARGENTINA - Tags: POLITICS HEALTH)