Fears have been raised over the political future of the 58-year-old president who has already had three cancer operations since the middle of last year.
More surgery will cast doubts on his political future and his "revolution" in the OPEC nation.
Venezuelan President Hugo Chavez said he would undergo another cancer operation in the coming days after doctors in Cuba found a third recurrence of malignant cells in his pelvic area.
Unfortunately, during these exhaustive exams they found some malignant cells in the same area ... . It is absolutely necessary, absolutely essential, that I have to undergo a new surgical intervention.
With God's will, like on the previous occasions, we will come out of this victorious.
Fears have been raised over the political future of the 58-year-old president who has already had three cancer operations in Cuba since the middle of last year.
News of more surgery will likely raise new doubts about his political future and the fate of his self-styled "revolution" in the OPEC nation.
In his comments on Saturday, Chavez sat alongside members of his Cabinet, including Vice President Nicolas Maduro and Congress head Diosdado Cabello, two close and powerful allies who might look to replace him if Chavez were to leave office.