Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously known left upper lobe subpleural mass with fiducial markers appears increased in density since the prior radiograph from ___ . Lung volumes are reduced since the prior study . No definite pleural effusion or pneumothorax . Cardiomediastinal contour is unchanged , with mild cardiomegaly . Chronic changes proximal right humerus appears similar to prior .
    OUTPUT:
    
Interval reduction in lung volumes with increasing density of the subpleural left upper lobe mass since ___ .