Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The pre-existing rounded opacity in the left lower lobe is barely visible on today 's radiograph . The lungs are well - expanded . No focal consolidation , pleural effusion , pulmonary edema , or pneumothorax . No new pulmonary nodule or mass . The heart size is normal . Mediastinal contours , hila , and pleura are unchanged . Stable slight prominence of the pulmonary arteries consistent with history of pulmonary hypertension . Small hiatal hernia .
    OUTPUT:
    
1 . The left lower lung nodule is barely visible today . 2 . No new pulmonary nodule or mass .