Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal opacity , pleural effusion or pneumothorax . The cardiomediastinal silhouette is stable . A calcified density in the right upper quadrant represents a calcified liver cyst which is better characterized on the prior CT abdomen and pelvis .
    OUTPUT:
    
No acute cardiopulmonary process .