Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are normal . Normal size of the cardiac silhouette . Normal hilar and mediastinal structures . No pneumonia , no pulmonary edema . No pleural effusions . Severe degenerative changes of the right shoulder are noted and worsened from chest radiograph ___ .
    OUTPUT:
    
1 . No acute intrathoracic abnormality . 2 . Severe degenerative changes of the right shoulder are worse since chest radiograph ___ .