Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Evaluation is limited by low lung volumes and underpenetrated technique . The heart appears mildly enlarged with an LV configuration . The apparent ground - glass opacity within the lungs could in part reflect inspiratory effort , though the possibility of mild edema is not excluded . No effusion or pneumothorax is seen . Bony structures are intact .
    OUTPUT:
    
Limited exam due to low lung volumes and underpenetrated technique with mild cardiomegaly and possible mild pulmonary edema .