Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right pleural effusion is perhaps slightly larger than one day prior . Left pleural fluid is similar . There is widening of the mediastinal vascular pedicle , and increased interstitial markings compatible with mild congestive failure . Superimposed infectious process could be obscured , particularly at the left lung base , though all the current findings could also be explained by congestive failure . There is no pneumothorax . Upper lungs remain well aerated .
    OUTPUT:
    
Findings again compatible with congestive failure .