The authors studied the incidence of chagasic cardiopathy in 15.000 consecutive necropsis and its asscciation with "megas". There were 145 ocurrences of "megas" out of 875 chagasic cardiopathy (16.56 %) with the proininence of males. There was a greater incidence of "megas" in whites (55) rather than in mulattos (53) and in negroes (31) among 858 chagasic cardiopathy. In 848 chagasic cardiopathy, 85,78% were people who died between 21 and 60 years of age. The greatest number of cardiopathy (120 or 14.14%) and "megas" (21 or 15,78% ) was found in individuals from 36 to 40 years of age. These results show a different incidence of associated cardiopathy and megas in comparison loith those observed in other parts of the country and other countries in South America.