Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mass - like area of opacity in the right middle lobe has increased in size , currently measuring 4 .6 x 4 .6 cm and previously measuring 4 .6 x 2 .2 cm . It now contains possible cavitation . Diffuse interstitial opacities have also progressed in the interval , and have a mid and lower lung predominance . Heart is not enlarged . Mediastinal and hilar contours are stable in appearance . There are no pleural effusions . Note is made of previous right mastectomy procedure .
    OUTPUT:
    
1 . Marked worsening of bilateral interstitial opacities , which could reflect lymphangitic carcinomatosis . Differential diagnosis includes non-cardiogenic pulmonary edema and atypical pneumonia . 2 . Increased size of mass - like opacity in right middle lobe with possible cavitation . CT may be helpful for more complete characterization , as communicated by phone on the date of discovery .