Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of focal consolidation , pleural effusion , pneumothorax , or pulmonary edema . Bronchial wall thickening is noted . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Mild bronchial wall thickening due to bronchitis , asthma , or early viral pneumonia , although no lobar consolidation is identified .