A Very Rare Case of Bilateral Partial Anomalous Pulmonary Venous Connection in an Adult

Partial anomalous pulmonary venous connection is a condition in which some, but not all, of pulmonary veins connect to the right atrium or its tributaries, rather than to the left atrium. This rare condition more frequently occurs unilaterally, in the right or left pulmonary veins. The occurrence of bilateral partial anomalous connections is a very rare anatomic finding. There was noticed that only the right superior pulmonary vein drains into the left atrium, while the right inferior pulmonary vein and all left pulmonary veins drained into a venous collector, localized extra pericardial in the left side , which drained through a large vertical vein to the innominate vein. To our knowledge, there is only one reported case that is similar to our case. We corrected the anomaly successfully and the patient did a good postoperative course.