Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Multiple left rib deformities appear healed with adjacent pleural - based opacity likely representing scarring . There has been interval resolution of left basal opacity seen on prior exam . There is no evidence of pneumonia or CHF . The cardiomediastinal silhouette appears within normal limits . An old rib deformity at the right lower lateral rib cage is unchanged . There is a mild T8 compression deformity which is stable from prior exam with approximately ___ % loss of anterior vertebral body height and no malalignment . Deformity of the left distal clavicular shaft is again noted .
    OUTPUT:
    
No acute findings . Posttraumatic changes in the osseous structures as described .