Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The images are somewhat underpenetrated due to patient body habitus . Given this , left mid lung linear atelectasis / scarring persists . No focal consolidation or large pleural effusion is seen . There is prominence of the interstitial markings , consistent with interstitial edema , possibly minimally improved since the prior study . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Interstitial edema , stable to possibly minimally improved .