Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No significant interval change other than a small focal opacity in the right upper lobe which could represent a focal consolidation , mucous plugging , or areas of superimposed normal structures . No pleural effusion , edema , or pneumothorax . Cardiomediastinal silhouette is unchanged . Descending thoracic aorta calcifications are unchanged . Mild dextroconvex scoliosis of the thoracic spine is also unchanged . Moderate anterior osteophytes in the lower thoracic vertebral bodies are unchanged . An incidental azygous fissure is again noted . There is pectus excavatum .
    OUTPUT:
    
Small focal rounded opacity in the peripheral right upper lobe could reflect focal pneumonia or mucous plugging , less likely a mass given the short time course of development . Recommend treatment for infection and short interval follow - up after treatment to ensure resolution .