Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Linear atelectasis is seen in the right upper lobe adjacent to the minor fissure with volume loss . There is no focal consolidation , pleural effusion or pneumothorax . Heart size is normal . Mediastinal silhouette and left hilar contours are normal . The right hilum is slightly enlarged . No acute osseous abnormality or displaced rib fracture is seen .
    OUTPUT:
    
Right upper lobe atelectasis with volume loss . This is due to a right hilar lesion , better assessed on the subsequent CT .