Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , lung volumes are lower , causing crowding of bronchovascular structures . However , increased interstitial pulmonary lung markings bilaterally suggests mild central pulmonary vascular congestion . No focal consolidation or pleural effusions . No evidence of pneumothorax . Heart size is unchanged . Compression wedge deformities of 2 thoracic spinal vertebral bodies are unchanged since ___ .
    OUTPUT:
    
1 . Mild central pulmonary vascular congestion . No focal consolidation identified . 2 . Compression wedge deformities of 2 thoracic spinal vertebral bodies are unchanged since ___ .