Abnormal drainage of inferior vena cava to left atrium together with a partial abnormal pulmonary venous drainage to right atrium in the presence of atrial septal defect.

The direct abnormal drainage of the inferior vena cava (IVC), while rare, is well-recognized anomaly of systemic venous drainage. It has been reported both in isolation and in association with other cardiac defects. This is a case of an abnormal drainage of IVC into left atrium (LA) together with partial abnormal pulmonary venous drainage to the right atrium (RA) and atrium septal defect (ASD).