Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable technique exaggerates the cardiac contour and pulmonary vasculature . Additionally , there are low lung volumes which further exaggerate the mediastinal contour . There is mild cardiomegaly , pulmonary vascular congestion and likely mild interstitial edema . No right pleural effusion . Blunting of the left costophrenic angle may be due to atelectasis or a small effusion .
    OUTPUT:
    
Low lung volumes and portable technique exaggerate the cardiac contour and pulmonary vasculature . With this in mind there is mild cardiomegaly , vascular congestion and likely interstitial edema . No large pleural effusion .