Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral views of the chest provided . Single lead pacemaker are again seen projecting with its tip in the region of the right ventricle . Mildly elevated left hemidiaphragm again seen . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is stable . Imaged osseous structures are demineralized though appear grossly intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process .