Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest . There is asymmetric density projecting over the right ___ costochondral cartilage compared to the left . Elsewhere the lungs are clear . There is no effusion or pulmonary vascular congestion . Cardiomediastinal silhouette is normal . No acute osseous abnormalities detected .
    OUTPUT:
    
No definite acute cardiopulmonary process . Asymmetric opacity projecting over the right ___ costochondral cartilage potentially due to degenerative changes at the joint however underlying opacity in the lung is possible . Recommend lordotic views to exclude underlying parenchymal opacity / mass lesion .