Venezuelan President Hugo Chavez says doctors in Cuba had found a new lesion in the same place where he had a tumour removed last year and said he will require surgery.
"It is a small lesion of about 2cm in diameter, very clearly visible," Chavez told state television.
The announcement thrust Venezuelan politics into new uncertainty because the socialist leader is seeking re-election this year, hoping to extend his more than 13 years in power with a new six-year term.
