Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs . There is no focal consolidation , pleural effusion , or pneumothorax . There may be a focus of atelectasis in the left lung base . Mild cardiomegaly is unchanged . There is no evidence of pulmonary edema .
    OUTPUT:
    
No acute cardiopulmonary process .