doctor explaining lungs x-ray film to patiant in the medical office. the film shows symptom of virus or cancer infect patient lung

2019 cancer care chest corona coronavirus covid19 cure death diagnosis diagnostic disease doctor exam explain explaining film health hospital illness infect lung lungs medic medical medicine ncov office organ outbreak pandemic patiant patient pestilence pneumonia prevention pulmonary radiography radiologist radiology ray respiratory shows symptom treat treatment vaccine viral virus warning wuhan xray