Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . The heart size is normal . No configurational abnormality is identified . Unremarkable appearance of thoracic aorta and no mediastinal abnormalities are seen . The pulmonary vasculature is normal . No signs of acute infiltrates and the lateral and posterior pleural sinuses are free . No remaining pneumothorax in apical area , either left or right side . Comparison is made with the next preceding chest examination of ___ . The , at that time , existing left - sided apical pneumothorax has resolved . Same holds for the diffusely increased parenchymal pattern , mostly in central location , consistent with edema . With regard to skeletal findings on this routine PA and lateral chest examination , one can notice only minor rib deformities on the left side in the form of local increased sclerosis in the posterolateral area of the seventh , eighth and ninth rib , consistent with callus formation . No persistent bony separation or marked displacement is observed on the PA and lateral chest examination . The acute trauma CT of ___ is reviewed . At that time , multiple left - sided rib fractures were noted and seen to involve the left - sided third , fourth , sixth , seventh , eighth and ninth as well as tenth and eleventh rib . There was never any major diastasis . The present chest examination can identify local sclerosis in some of these sites , consistent with ongoing osseous healing . Detailed visualization of all the previously identified rib fracture sites would require a renewed CT examination , which is hardly indicated unless the patient displays local relevant symptoms .
    OUTPUT:
    
Multiple left - sided ribs demonstrating local callus formation at sites of previous nondisplaced fractures .