Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . The heart appears mildly enlarged but difficult to judge in the setting of low lung volumes . The mediastinal and hilar contours are unremarkable . There are patchy streaky opacities at the lung bases that can probably be attributed to atelectasis . At the extreme left lung apex there is a nodular focus that measures approximately 9 mm in diameter , potentially a lung nodule , although other possible explanations include subpleural scarring or a bony excrescence . The possibility of a lung nodule needs to be considered , however . There is no pleural effusion or pneumothorax . Bony structures are unremarkable .
    OUTPUT:
    
1 . Low lung volumes with patchy basilar opacities which can probably be attributed to atelectasis , although pneumonia is difficult to completely exclude . 2 . Nodular focus at the left lung apex , not specific but potentially a true lung nodule of substantial size . Particularly if prior radiographs are not available to show long - term stability of this appearance , then CT is suggested to evaluate further when clinically appropriate . Findings and recommendations posted to the ER dashboard while the patient was still in the ER .