Spinnaker sign – a neonatal chest radiograph sign of…

Spinnaker sign – a neonatal chest radiograph sign of pneumomediastinum. It refers to the thymus being outlined by air with each lobe displaced laterally like spinnaker sails. This appearance may also be termed the thymic wing sign. Bonus radiology signs also demonstrated in this case include left-sided deep sulcus sign of pneumothorax and continuous diaphragm sign of pneumomediastinum. 

from our tumblr blog: http://radiologysigns.tumblr.com/post/23009819392

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