fossa may give the impression of a periosteal reaction of the clavicle limitations while chest radiographs are a relatively cheap and safe method of investigating diseases of the chest, there are a number of serious chest conditions that may be associated with a normal chest radiograph and other means of assessment may be necessary to make the diagnosis. for example, a patient with an acute myocardial infarction may have a completely normal chest radiograph. gallery chest x-ray pa inverted and enhanced. projectionally rendered ct scan, showing the transition of thoracic structures between the anteroposterior and lateral view chest film showing increased opacity in both lungs, indicative of pneumonia a chest radiograph showing bronchopulmonary dysplasia. a chest film after insertion of an implantable cardioverter-defibrillator, showing the shock generator in the upper left chest and the electrical lead inside the right heart. note both radio-opaque coils along the device lead.