Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Rotated and lordotic positioning . There is is increased vascular plethora compared with prior film , consistent with CHF . Patchy opacity left base could reflect atelectasis and / or scarring , but is slightly increased . The extreme costophrenic angles are excluded from the film . There are probable small left - greater - than - right effusions , similar to the prior study . No new area of consolidation is identified .
    OUTPUT:
    
CHF , with interstitial edema , increased compared with 1 day earlier . Small left greater right bilateral pleural effusions again noted . Atelectasis at the left lung base . This is slightly more pronounced than 1 day earlier . The differential diagnosis includes slight increase in the degree of atelectasis versus an early infiltrate .