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 . The cardiomediastinal silhouette is within normal limits . Asymmetrical opacity at right first costochondral junction is likely due to asymmetrical degenerative changes
    OUTPUT:
    
No evidence of acute cardiopulmonary process . Asymmetrical opacity at right first costochondral junction is likely due to asymmetrical degenerative changes , but additional shallow oblique radiographs may be helpful to exclude a lung nodule .