Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are associated with mild bronchovascular crowding . There is no focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is stable . The aorta is slightly unfolded and calcified .
    OUTPUT:
    
Bibasilar subsegmental atelectasis noted . Otherwise , no acute pulmonary process . No focal consolidation to suggest pneumonia . No CHF .