There two cases one with Takayasu’s arteritis and the other one with tuberculosis confirmed by culture. The nitrate silver stained amplification product of M. tuberculosis was electrophoreses on no denaturing 10% polyacrylamide gel. The 123 product obtained for M. tuberculosis is indicated by the arrows. a) Lanes: molecular size marker 123 bp for M. tuberculosis (MT) and 89 for M. bovis and; 1: DNA of bacillus of Mycobacterium in the aorta of case’s code number 60; DNA H37Rv taken from cellular culture. Case of a woman of 12 years old with Takayasu’s arteritis type I + C + P and low socioeconomic Level, with initial symptoms of palpitations. We found generalized aortic damage, located in the adventitia and she died to the 16 years; b) Case of a man of 18 years old, he had familiar with tuberculosis. He came to the Institute by dyspnea and he developed cardiogenic shock. He has extensive myocardium infarct and died.