Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderatecardiomegaly has been stable compared to exams dated back to at least ___ . There is possible mild pulmonary vascular congestion . There are bilateral pleural effusions . Increased opacities are seen at the lung bases bilaterally and them inor fissure is slightly thickened . No pneumothorax detetected . Please see report of ___ CT scan showing loculated fluid vs fat in the medastinum posteriorly -- this likely accounts for some of the posterior opacity seen on this exam . Mild t- spine degenerative changes noted .
    OUTPUT:
    
1 . Cardiomegaly and mild chf . 2 . Bilateral pleural effusions , right > left . 3 . Bibasilar increased opacities , consistent with bibasilar collapse and / or consolidation . 4 . Posterior mediastinal mass seen on ___ CT is not well delineated on this exam but could account for some of the hazy density seen posteriorly .