Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph demonstrates no pneumothorax . Heart size is normal . Bilateral hilar opacites may reflect adenopathy . Streaky opacity projecting over the left mid lung zone is most consistent with atelectasis . There is no evidence of pulmonary edema . There is no pleural effusion . Hardware is noted within the right humerus . There is no air under the right hemidiaphragm .
    OUTPUT:
    
Bilateral perihilar opacities may reflect adenopathy or prominent central vasculature . There is no acute intrathoracic abnormality identified . Attention on follow up imaging is recommended .