Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right chest Port - A - Cath terminates in the right atrium , stable from ___ . Right lower lung opacity obscures the right heart border and right hemidiaphragm , with corresponding opacities on lateral view . This is new since prior study . Mediastinal contours , hila , and cardiac silhouette are otherwise normal . No pulmonary edema , pleural effusion , or pneumothorax .
    OUTPUT:
    
Likely pneumonia involving the right middle and lower lobes .