Tanriverdi, SBaytur, YTansug, NÇetin, MCoskun, S2024-07-182024-07-182192-8959http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/7700The vein of Galen aneurysm is the most common form of symptomatic cerebrovascular malformation in neonates and infants. This anomaly may be diagnosed prenatally by several imaging modalities and causes high cardiac output, which may lead to cardiac failure, in newborns. Total anomalous pulmonary venous return is a rare entity that makes up approximately 0.4%-2% of all congenital heart diseases. The most common type of total anomalous pulmonary venous return is the supracardiac type. The pulmonary veins drain to a confluence posterior to the heart and then to a vertical vein, most commonly on the left, which enters the innominate vein and the drains to the right atrium. Obstructed pulmonary veins with supracardiac- type total anomalous pulmonary venous return can cause severe cardiac and respiratory failure. In this article, a case of a neonate with a vein of Galen aneurysm diagnosed prenatally by magnetic resonance imaging, and a supracardiac obstructed type of total anomalous pulmonary venous return with pulmonary hypertension is presented.EnglishArticle