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 is widening of the right upper mediastinal contour which may reflect venous distention and less likely lymph node enlargement . Heart is mildly enlarged and has increased in size since the prior study . The right upper lobe opacities are also seen . Perihilar vascular congestion is noted as well as bilateral interstitial opacities . Multifocal patchy air space opacities are also demonstrated in the right upper lobe and both lower lobes . There is no pneumothorax . Small bilateral pleural effusions are present . There has been prior median sternotomy and CABG .
    OUTPUT:
    
Bibasilar and right upper lung opacities , new since prior , which may represent asymmetrical edema in the setting of cardiomegaly but coexisting infection should be considered . Short term follow - up radiographs are recommended to ensure resolution and to exclude a component of underlying chronic lung disease .