[Aneurysm of the interatrial septum with atrial septal defect, disclosed by pulmonary embolism complicated by paradoxical embolism].

The authors report the case of a patient admitted to hospital for bilateral phlebitis of the lower limbs, associated with an atrial septal defect. The presence of significant pulmonary hypertension accounted for the paradoxical embolism by inversion of the intracardiac shunt. No recurrence has been observed with a follow-up of six months on anticoagulant treatment.