Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior chest radiograph , there has been interval worsening of the left upper lobe / perihilar mass , which appears increased in size when compared to the prior study . Heart size is difficult to assess given the presence of the perihilar mass . A moderate left - sided pleural effusion is new when compared to the prior chest radiograph , with evidence of mild pulmonary vascular congestion . Left basilar consolidative opacity likely reflects atelectasis . No pneumothorax is identified . Mild emphysematous changes are seen within the lung apices . There are no acute osseous abnormalities .
    OUTPUT:
    
Increased size of left upper lobe / perihilar mass compatible with known malignancy . Moderate - sized left pleural effusion with left basilar opacity likely reflecting atelectasis . Mild pulmonary vascular congestion .