Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal lateral views of the chest . The heart is of normal size with stable cardiomediastinal contours . Right middle and lower lobe collapse , A small right pleural effusion is increased since prior with substantial right lung base atelectasis . The left lung is essentially clear . No focal consolidation or pneumothorax . Right chest wall port has been removed . The tip of a right PICC is obscured .
    OUTPUT:
    
Small right pleural effusion due to more severe atelectasis of the right middle and lower lobes .