The chest <a href="https://en.wikipedia.org/wiki/X-ray" class="extiw" title="en:X-ray">X-ray</a> photo of a 30-years-old healthy man.
<a href="//commons.wikimedia.org/wiki/User:Doctoroftcm" class="mw-redirect" title="User:Doctoroftcm">Doctoroftcm</a>
2010-11-16
<span class="int-own-work" lang="en">Own work</span>