(CNN) -- Venezuelan President Hugo Chavez has asked lawmakers to approve a trip to Cuba, where he is expected to continue cancer treatment.
Chavez announced in June that doctors had removed a cancerous tumor from his body, but the leader has not specified what type of cancer. He traveled to Cuba last month for about a week of chemotherapy.
According to statements posted on the National Assembly website, lawmakers will meet Saturday in a special session to vote on authorization.
Chavez is expected to undergo various tests while in Cuba and has asked to be gone for more than five days, according to the statements.
Hours before Chavez left Venezuela the last time, the president delegated some of his powers to his vice president and finance minister -- marking the first time in his more than 12 years in office that he ceded authority.