Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette is likely within normal limits , although mild cardiomegaly is difficult to exclude given appearance , likely mildly accentuated due to low lung volumes . The hila are unremarkable . The lungs are clear without focal consolidation . There is no pulmonary vascular congestion or pulmonary edema . There is no pneumothorax or pleural effusion . Surgical clips project over the abdomen .
    OUTPUT:
    
Low lung volumes . Borderline mild cardiomegaly . Otherwise , no acute cardiopulmonary process .