 On 9 January 1950 , Evita fainted in public and underwent surgery three days later . Although it was reported that she had undergone an <unk> , she was diagnosed with advanced cervical cancer . <unk> continued through 1951 ( including the evening after " Cabildo <unk> " ) , with extreme weakness and severe vaginal bleeding . By 1951 , it had become evident that her health was rapidly deteriorating . Although her diagnosis was withheld from her by Juan , she knew she was not well , and a bid for the vice @-@ presidency was not practical . Only a few months after " the <unk> " , Evita underwent a secret radical <unk> in an attempt to eradicate her advanced cervical cancer . In 2011 , a Yale <unk> studied Evita 's skull x @-@ rays and photographic evidence and said that Perón may have been given a prefrontal <unk> in the last months of her life , " ... to relieve the pain , agitation and anxiety she suffered in the final months of her illness . " 
