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Radiologia Brasileira

versão On-line ISSN 1678-7099

Resumo

ARAUJO JUNIOR, Cyrillo Rodrigues de et al. Persistent left superior vena cava with absent right superior vena cava: image findings. Radiol Bras [online]. 2003, vol.36, n.5, pp.323-326. ISSN 1678-7099.  https://doi.org/10.1590/S0100-39842003000500013.

Persistent left superior vena cava with absent right superior vena cava is a rare anomaly, with less than 150 cases reported in the literature. Congenitally persistent left superior vena cava is the most common variant of systemic venous return to the heart, resulting embryologically from failure of the left anterior cardinal vein to become obliterated. Its incidence varies from 0.3% in patients with otherwise normal heart to 4.3% in patients with congenital heart disease. In the majority of the patients, a right superior vena cava is present as well, but rarely the right anterior cardinal vein degenerates resulting in the absence of the normal right superior vena cava. The blood from the right side is carried by the persistent left superior vena cava to the right atrium through the coronary sinus. We report the case of a patient with a persistent left superior vena cava and absence of right superior vena cava identified by chance during a chest radiograph and computed tomography examination for investigation of chronic pulmonary obstructive disease. The patient had no congenital heart disease and the blood from the right side was drained by the persistent left superior vena cava into the right atrium through the coronary sinus.

Palavras-chave : Persistent left superior vena cava; Absent right superior vena cava; Chest radiography; Computed tomography.

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