Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . The right upper lobe mass is again seen measuring 5 .7 cm AP x 5 .3 cm CC x approximately 5 .2 cm TRV . Otherwise , the lungs are clear without evidence of consolidation . Nodular opacities seen on prior CT are not clearly delineated by this chest x-ray . There is no evidence of pulmonary vascular congestion . Cardiomediastinal silhouette and osseous structures are unchanged .
    OUTPUT:
    
Known right upper lobe mass without visualized superimposed acute cardiopulmonary process .