Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal chest radiograph was obtained . A left lower lobe collapse is new since ___ . There is no pneumothorax . A left pleural effusion can not be excluded . Severe cardiomegaly may have slightly worsened since of ___ . Median sternotomy wires and valve prosthesis are unchanged .
    OUTPUT:
    
New left lower lobe collapse .