Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two upright frontal views of the chest demonstrate the lungs are well expanded and clear . The cardiomediastinal silhouette is unremarkable . A left - sided Port - A - Cath terminates in the upper SVC . There is no evidence of pleural effusion , pulmonary edema , pneumothorax or subdiaphragmatic free air . Mild scoliotic curvature of the thoracic spine is noted , convexed to the right with mild degenerative changes .
    OUTPUT:
    
No acute cardiopulmonary process . No subdiaphragmatic free air .