Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph obtained . Underpenetrated technique limits evaluation of the lung bases . There is an irregular opacity projecting over the left mid lung which could represent an abnormal appearance of atelectasis or scarring , though the possibility of a nodule / mass is not excluded . There is suggestion of mild pulmonary edema and small bilateral effusions , though underpenetrated technique limits evaluation . The heart appears within normal limits of size . The mediastinum is grossly unremarkable . No pneumothorax . Bony structures are intact .
    OUTPUT:
    
Possible mild edema . Irregular opacity in the left mid lung . A non-emergent CT chest may be obtained to further assess .