Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal lung volumes . There is no pleural effusion , focal consolidation , or pneumothorax . Bilateral brain stimulator devices are noted which partially obscure underlying lungs . Hilar and mediastinal silhouettes appear unremarkable . Heart size is normal . There is no pulmonary edema . Partially imaged upper abdomen is unremarkable . Compression deformity of the L1 vertebral body is noted , of uncertain chronicity .
    OUTPUT:
    
1 . No evidence of acute cardiopulmonary process . 2 . Compression deformity of the L1 vertebral body of indeterminate chronicity .