Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a well - circumscribed opacity at the right lung base measuring approximately 5 .7 x 4 .5 cm . Although this obscures the right heart border , this is relatively dense and there is the suggestion of an abnormality to the underlying right tenth rib . This may reflect a chest wall abnormality rather than a true parenchymal abnormality . Recommend CT chest to further evaluate . The left lung is clear . The cardiac silhouette is normal in size . There is no pleural effusion or pneumothorax . Bones are diffusely osteopenic .
    OUTPUT:
    
5 .7 x 4 .5 cm well - circumscribed mass at the right lung base . The right heart border is not well visualized suggesting a right middle lobe location . However , given the deformity of the underlying right tenth rib and the density of the lesion , this may reflect a chest wall lesion and Chest CT is recommended for further evaluation .