Scimitar sign | definition of scimitar sign by Medical dictionary
a curvilinear structure seen radiographically in the lung and associated with anomalous pulmonary venous drainage, suggesting the sickle shape of a saber; also used to refer to the scalloped shape of the sacrum in spinal dysraphism with anterior meningocele.A rare vascular anomaly which is more common in females that may present in early childhood, in which some or all of the pulmonary veins drain into the inferior vena cava. The scimitar syndrome is often accompanied by hypoplasia of the right lung (RL), dextrocardia, and systemic arterial supply to the RL from descending aorta
Surgical anatomy RL and right pulmonary artery hypoplasia, dextrocardia, anomalous origin of pulmonary arteries from the aorta to RL, anomalous venous drainage of RL into the inferior vena cava and anomalous right diaphragm
Management Pneumonectomy or correction of cardiovascular ‘plumbing’ defects.
scim·i·tar sign (si'mi-tahr sīn)
A curvilinear structure seen in the lung roentgenographically, associated with anomalous pulmonary venous drainage, suggesting the sickle shape of a Turkish saber; also used to refer to the scalloped shape of the sacrum in spinal dysraphism with anterior meningocele.
References in periodicals archive
These veins generally form a scimitar sign or a view mimicking arteriovenous (AV) malformation on the chest X-ray.
in the presence of scimitar sign to define the abnormal right pulmonary vein splitting into left atrium.
1) showed small right hemithorax with shift of heart towards right side with a retrocardiac curved band like opacity extending towards diaphragm (Scimitar Sign).
Although the Scimitar sign is visible on chest radiograph in many patients of Scimitar syndrome, additional diagnostic procedures are often necessary to confirm diagnosis and to evaluate associated abnormalities.
(5,7) The scimitar sign
occurs when there is smooth eccentric vessel tapering, and an hour-glass sign occurs with concentric luminal narrowing.
This is particularly important if there is a co-existing cardiac anomaly or a suspicion of the scimitar sign
on the radiograph.