Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate a right port catheter with tip in the upper SVC . The lung volumes are low , accentuating the cardiac silhouette . Extensive bilateral nodular opacities are more extensive compared to ___ , even allowing for low lung volumes . This appearance is consistent with known miliary pattern rectal cancer metastases , supervening infection or edema can not be excluded but felt less likely . Several large lung masses are better appreciated on preceding CT dated ___ . There is no pneumothorax or large effusion . Atelectasis is seen in the right cardiophrenic angle . There is permeative destructive process involving the distal right clavicle , compatible with metastasis .
    OUTPUT:
    
Progressing diffuse pulmonary metastasis . Supervening edema unlikely .