CARACAS, Venezuela (AP) — Venezuelan President Hugo Chavez has undergone surgeries, chemotherapy and radiation treatment for cancer during the past year and a half. Some of the developments in his medical treatment have included:

— June 30, 2011: Chavez appears on television in Cuba to confirm he had a cancerous tumor removed. He later says the tumor extracted was the size of a baseball.

— July 4, 2011: Returns to Venezuela, but later travels to Cuba periodically for chemotherapy and medical tests.

— Sept. 23, 2011: Says he completed chemotherapy and calls the treatment successful. Says subsequently that tests show no reappearance of cancerous cells.

— Feb. 21, 2012: Says his doctors found a new lesion in the same place where the tumor was previously removed, and announces plans to return to Cuba for surgery.

— Feb. 26, 2012: Undergoes operation that removes the tumor from the same location in his pelvic region. Says later that follow-up tests showed the tumor was "recurrence of the initially diagnosed cancer."

— March 24, 2012: Travels to Cuba to begin first round of radiation therapy.

— April 14, 2012: Travels to Cuba for second round of radiation treatment.

— April 26, 2012: Returns to Venezuela following cancer treatment in Cuba, saying his latest round of therapy was successful.

— July 9, 2012: Says at a news conference that tests showed he is "totally free" of cancer.

— Oct. 7, 2012: Wins another six-year term, beating challenger Henrique Capriles by an 11-point margin.

— Nov. 27, 2012: Announces plans to travel to Cuba for more medical treatment. He says doctors have recommended he "begin special treatment consisting of various sessions of hyperbaric oxygenation."