Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . Size of the bilateral effusions , left greater than right has slightly decreased in size since prior exam . There is less pulmonary vascular congestion on the current exam as well . Cardiac silhouette which appears enlarged , is unchanged . No acute osseous abnormality is detected .
    OUTPUT:
    
Persistent small bilateral effusions , larger on the left which have decreased in size . Decreased pulmonary vascular congestion . No evidence of superimposed acute cardiopulmonary process .