Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . The lungs are clear of consolidation . There is a nodular opacity projecting just lateral to the left hilum , this could be due to superimposed shadows from perihilar vasculature however shallow obliques suggested to exclude underlying pulmonary nodule . The cardiac silhouette is slightly enlarged . No acute osseous abnormalities detected .
    OUTPUT:
    
No acute cardiopulmonary process . Possible left perihilar nodular opacity for which shallow obliques suggested as this may alternatively represent superimposed shadows of vascular structures .