Emerg Radiol (2018) 25:121–127 DOI 10.1007/s10140-017-1563-x ORIGINAL ARTICLE Clinical and imaging features in lung torsion and description of a novel imaging sign 1 1 Mark M. Hammer & Rachna Madan Received: 14 August 2017 /Accepted: 6 October 2017 /Published online: 13 October 2017 American Society of Emergency Radiology 2017 . . . Abstract Keywords Lung torsion Lobar torsion Lung resection CT Purpose We set out to identify the clinical and imaging fea- pulmonary angiogram 3D reconstruction tures seen in lung torsion, a rare but emergent diagnosis lead- ing to vascular compromise of a lobe or entire lung. Methods We retrospectively identified 10 patients with tor- sion who underwent chest CT. We evaluated each case for Introduction the presence of bronchial obstruction and abnormal fissure orientation. In seven patients who underwent contrast- Lung torsion is a rare but potentially life-threatening event enhanced CTs, we assessed for the presence of the antler sign, whereby a lobe or the entire lung twists about its pedicle, a novel sign seen on axial images demonstrating abnormal leading to venous congestion and/or hemorrhagic infarction. curvature of the artery and branches originating on one side. The most common clinical scenario is right middle lobe tor- Results
Emergency Radiology – Springer Journals
Published: Oct 13, 2017
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