Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate a normal cardiomediastinal silhouette and well - aerated lungs without focal consolidation , pleural effusion , or pneumothorax . A 5 mm nodule projecting over the medial left clavicle is noted . The visualized upper abdomen is unremarkable .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . 5 mm nodule projecting over the medial left clavicle . It is uncertain whether this is a bone or lung lesion .