[Total anomalous pulmonary venous drainage below the diaphragm. Report of three cases and semiologic considerations (author's transl)].

Clinical, hemodynamic and pathologic findings of three patients with total anomalous pulmonary venous drainage to the portal vein system are presented. Some of the findings are emphasized because of its rarity in previous reports. These are: 1) Cyanosis was mild. 2) There was some obstruction of the foramen ovale, besides the obstruction at the portal system level. In two patients gastrointestinal bleeding and analitical evidence of renal failure, were found, both findings not previously reported to our knowledge.