Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate low lung volumes , which accentuate bronchovascular markings . There are trace pleural effusions . Moderate cardiomegaly . There is perihilar vascular congestion . Hilar and mediastinal silhouettes are unchanged . Heart size is moderately enlarged with possible aneurysmal dilatation at the apex . Patient is status post medial sternotomy and mitral valve replacement .
    OUTPUT:
    
Small bilateral pleural effusions , moderate cardiomegaly and pulmonary vascular congestion . No focal consolidation .