BRASILIA (Reuters) - Brazilian President Michel Temer is being treated for a slight blockage of a coronary artery, his office said on Wednesday, denying a press report that he would undergo an angiogram procedure later this month.  There is no catheter procedure or surgery planned or recommended for the president,  a spokesman said. The blockage was detected during a routine medical checkup and Temer s doctor Roberto Kalil Filho put the 77-year-old leader on a low-fat diet and told him to take an aspirin a day, the spokesman said. TV Globo reported on Tuesday that Temer had a partial coronary obstruction and would undergo a heart procedure via catheter. The television network said the president had decided to delay the procedure until after Congress votes on whether he should stand trial on charges of obstructing justice and criminal organization in a corruption case. 