Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient has a known right - sided lymphangitic carcinomatosis , better assessed on CT . Right middle lobe on right base opacity most likely relates to chronic consolidation as seen on prior studies . Lateral left base subcentimeter rounded nodular opacity was also present on the chest CT from ___ . Additional , left lower lobe ground - glass opacities was also seen on prior CT . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Right middle lobe , right lower lobe , and left lower lobe opacities also seen on prior CT ; while it is difficult to accurately compare extent given differences in modality , radiographic findings are likely similar to those seen on recent prior chest CT . New small underlying consolidation is difficult to exclude .