Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is stable and within normal limits allowing for a poor inspiratory effort and suboptimal lung volumes . Patchy airspace opacity involve the left mid lung appears to localize to the lingula on lateral projection , concerning for pneumonia . The right lung is clear . There is no evidence of pulmonary vascular congestion . There is no pneumothorax or effusion .
    OUTPUT:
    
Left upper lobe airspace opacity , concerning for pneumonia . Repeat after treatment suggested to document resolution .