Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Mild cardiomegaly is again noted . The lungs are clear without focal consolidation , large effusion or pneumothorax . The mediastinal contour is unremarkable . There is a chronic compression deformity at L1 with progressive loss of vertebral body height increased from prior MRI of the lumbar spine dated ___ . There is no definite evidence for thoracic compression deformity on the lateral projection .
    OUTPUT:
    
Worsening collapse of a known L1 compression deformity . No definite sign of new thoracic compression deformity .