Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . A large mass better assessed on prior CT occupies the entirety of the left upper lobe . Persistent aeration of the superior segment of the left lower lobe is noted . There is a partially loculated left pleural effusion not significantly changed . The right lung remains mostly clear . A nodular opacity projects over the right upper lung measuring approximately 13 mm in maximal diameter , better assessed on prior CT . A left upper extremity PICC line is seen terminating in the low SVC .
    OUTPUT:
    
Overall appearance of the chest unchanged from recent PET - CT .