Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided AICD / pacemaker device is noted with leads terminating in the right atrium , right ventricle , and coronary sinus , all unchanged . Heart remains moderately enlarged . Mediastinal contours are unremarkable . There is mild interstitial pulmonary edema , essentially unchanged compared to the prior exam . No pleural effusion , focal consolidation or pneumothorax is present . Mild diffuse degenerative changes are seen in the thoracic spine . No acute osseous abnormalities are detected .
    OUTPUT:
    
Mild interstitial pulmonary edema , similar to the prior exam .