Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs were obtained . The lungs are well expanded . Bibasilar linear opacities are attributable to vascular markings . There is no definite consolidation , effusion , or pneumothorax . Cardiac and mediastinal contours are normal . On the lateral view , a relatively dense well circumscribed 1 cm nodule is again seen , unchanged from ___ .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Well - circumscribed nodule either within the anterior left lung or anterior mediastinum . The nodule is stable since ___ but should be assessed with CT , if this exam has not been performed elsewhere .