Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . In comparison to the prior study , a nodular opacity in the right upper lobe measuring approximately 13 mm , is new . The left lung appears relatively clear . No focal consolidation , pleural effusion , or pneumothorax is seen . No acute osseous abnormality is detected . Surgical clips are seen in the left paraspinal region in the abdomen , consistent with prior nephrectomy .
    OUTPUT:
    
New nodular opacity in the right upper lobe , concerning for metastatic disease , less likely infection in this patient with known history of RCC . A chest CT is recommended for further evaluation .