Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal views of the chest were obtained . Vague heterogeneous density in the left lower lobe is nonspecific but in the setting of neutropenia may represent infection . No substantial pleural effusion or pneumothorax . Heart size is top normal and cardiomediastinal contours are otherwise unremarkable . No radiopaque foreign body .
    OUTPUT:
    
Vague left lower lobe heterogeneous density , which may represent infection in the setting of neutropenia vs overlap of structures . If the patient is able , dedicated PA and lateral views would be helpful for further evaluation .