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 . A small hiatal hernia is better seen in prior abdomen CT . There is no focal consolidation , pleural effusion , or pneumothorax . Linear opacity in the right lower lung is compatible with atelectasis . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
No acute cardiopulmonary process . Right lower lung atelectasis .