Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse reticulonodular interstitial markings are increased since prior examinations in ___ and ___ . Bilateral pleural effusions are not significantly changed . Fibrotic changes at the left hilum are stable appearing from the prior examination . Right middle lobe and right lower lobe opacities persist , which may be related to atelectasis or infection . .
    OUTPUT:
    
Progressing chronic reticulonodular opacities , could be due to worsening widespread metastasis or superimposed edema or drug reaction . Right lower lobe and right middle low opacity persists , could be infection .