brasilia brazilian president michel temer treat slight blockage coronary artery office say wednesday deny press report would undergo angiogram procedure late month catheter procedure surgery plan recommend president spokesman say blockage detect routine medical checkup temer doctor roberto kalil filho put 77-year-old leader low-fat diet tell take aspirin day spokesman say tv globo report tuesday temer partial coronary obstruction would undergo heart procedure via catheter television network say president decide delay procedure congress vote whether stand trial charge obstruct justice criminal organization corruption case brazil 's president treat small coronary blockage