Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates a 1 .0 x 1 .0 cm opacity within the left lower lobe not definitely confirmed on the lateral chest radiograph . Linear opacity in the right upper lobe consistent with azygous fissure . Cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion . Osseous structures demonstrates no acute abnormality .
    OUTPUT:
    
1 cm density within the left lower lobe which may reflect confluence of overlying tissue . Recommend shallow obliques for further evaluation and characterization as discrete nodule can not be excluded . Otherwise unremarkable chest x-ray .