Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slight increase in opacity over the left mid lung is felt to most likely be due to overlying breast tissue . No definite focal consolidation is seen . There is no pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are unremarkable . Slight irregularity of the mid sternal body seen on the lateral view is of indeterminate age , but could be from prior trauma . Correlate with site of point tenderness , history .
    OUTPUT:
    
Slight increase in opacity of the left mid lung is felt to most likely be due to overlying breast tissue . No definite focal consolidation . Slight irregularity of the mid sternal body seen on the lateral view is of indeterminate age , but could be from prior trauma . Correlate with point tenderness at this site and for history of trauma .