Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were obtained . Since prior radiograph , there has been development of small pleural effusion on the right with fluid within the fissure . Opacity at the right base is similar as on prior radiographs and may represent atelectasis ; however , infection can not be excluded . There is atelectasis at left lung base . Peripheral left upper lobe opacity is unchanged . There is no pneumothorax . Cardiomediastinal silhouette is stable . There are degenerative changes in the thoracic spine .
    OUTPUT:
    
Re-accumulation of small right pleural effusion with opacity at the right base , with non-specific consolidation at right lung base which could be infectious . Follow - up to resolution .