Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and fairly well - aerated lungs without focal consolidation , pleural effusion , or pneumothorax . Surgical changes in the let lung are noted , with mild atelectasis in the left mid lung . The visualized upper abdomen is unremarkable . Gaseous distension of the colon is noted , similar in appearance to multiple exams from ___ .
    OUTPUT:
    
No acute cardiopulmonary process or evidence of pneumoperitoneum .