Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . Again seen are post-operative changes of left mastectomy . The lungs are clear of focal consolidation , effusion or pneumothorax . There is no pulmonary vascular congestion . The cardiomediastinal silhouette is within normal limits , noting pectus deformity , accentuating its size on the frontal film . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary process .