Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided demonstrating no focal consolidation , effusion or pneumothorax . The heart and mediastinal contours are normal . The imaged osseous structures are intact . A vague nodular opacity projects in the left mid lung between the eighth and ninth posterolateral arches , could represent a bone island or superimposed structures . Consider oblique projections to clarify .
    OUTPUT:
    
Subtle nodular opacity in the left mid lung seen on the frontal view projecting between the left eighth and ninth posterolateral arches could represent a bone island or superimposed structures , less likely a lung nodule . Recommend oblique projections to clarify .