Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: When compared to priors , there has been no significant interval change . Low lung volumes again resulting in crowding of the bronchovascular markings . There is no superimposed overt edema . Cardiomediastinal silhouette is stable . Median sternotomy wires are intact and prosthetic valve is noted . Right chest wall port is seen with catheter tip in the right atrium . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .