Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A spinal stimulator device projects over the base of the left neck and left hemithorax , as seen previously . The cardiac , mediastinal and hilar contours appear unchanged , allowing for differences in technique . There is hazy opacification of the left lung base which is nonspecific and could reflect atelectasis , but potentially pneumonia or aspiration , and potentially with a pleural effusion . There is also patchy non-specific right infrahilar opacity , which may be explained by atelectasis in association with new mild - to - moderate relative elevation of the right hemidiaphragm , although other etiologies such as pneumonia and aspiration can not be excluded by this study . There is no pneumothorax .
    OUTPUT:
    
Patchy basilar opacities which are nonspecific , but in addition to atelectasis , noting the history , pneumonia or aspiration should be considered as possible diagnoses .