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http://i.imgur.com/eoIzK6E.png
What is your radiological interpretation?

foreign bodies

aortic and mitral valve replacement. post open heart surgery

I agree with nirav.s

Great!
http://web.stanford.edu/dept/radiology/r...te141.html
http://www.nejm.org/doi/full/10.1056/NEJMicm040922
A follow-up radiograph of the chest shows the position of all four prosthetic valves (arrows, Panels A and B).