Retrosternal compression seven years after surgical correction of partial anomalous pulmonary venous connection: Scimitar syndrome.

Seven years after surgical correction of Scimitar syndrome, a 19-year-old patient complained of progressive dyspnea and tachycardia. Transthoracic echocardiography revealed a mass compressing the right ventricle. Magnetic resonance tomogram showed its exact retrosternal location and nature. A computed tomography-guided drainage decompressed the mass. Because of cystic wall persistence, a surgical extirpation of the whole cystic cavity was deemed necessary.