We report two cases of duodenal atresia associated with corporal symmetry changes. The one of them presented a "situs inversus total" and the other one a Ivermak syndrome. The association between duodenal atresia and Ivermak syndrome has a very low incidence. We have not found references with respect to the association between duodenal atresia and "situs inversus totalis". The embryo-genetic hypothesis that could relate both anomalies are discussed. Perhaps are not caused by chance.