Golden S sign – a chest radiograph sign of right upper lobe…

Golden S sign – a chest radiograph sign of right upper lobe collapse due to an obstructing central mass. The margin of the collapsed upper lobe forms a reverse S shape (blue line) as the peripheral lung collapses with a concave outline while the more central lung maintains a convex margin around the mass. The sign is highly suggestive of primary lung cancer and should prompt further investigation with CT. 

from our tumblr blog

http://radiologysigns.tumblr.com/

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