Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Nodular opacity projecting over the anterior ___ right rib moves with the rib on the obliques consistent with chondral calcification . Otherwise , no change from ___ in mild cardiomegaly , tortuous aorta and scarring at the right apex . No focal consolidation , pleural effusion or pneumothorax .
    OUTPUT:
    
Previously identified nodular opacity is calcification of the costal cartilage of the right 1st rib .