Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . Right perihilar opacity measuring approximately 3 .5 x 2 .7 cm , best seen on the frontal view , could be due to infection , although underlying pulmonary lesion is also not excluded . Left lung is clear . No pleural effusion or pneumothorax . Cardiac and mediastinal silhouettes are unremarkable . There has been interval removal of a left - sided port seen on the prior study .
    OUTPUT:
    
3 .5 x 2 .7 cm somewhat ill - defined opacity in the right perihilar region / right mid lung best seen on the frontal view , could be due to underlying infection or pulmonary lesion . Recommend followup to resolution , possible CT .