Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: As compared to prior radiograph from ___ , there appears to be new slightly triangular - shaped opacity projecting over the periphery of the left mid lung field . The right hemithorax is clear . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
As compared to prior radiograph from ___ , there appears to be a new slightly triangular - shaped opacity projecting over the periphery of the left mid lung field . If possible dedicated PA and lateral views are recommended to further delineate if findings are truly intraparenchymal or secondary to overlying soft tissue .