Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine AP view of the chest provided . Neurostimulator device projected over the left chest wall with leads extending to the left neck . The heart remains top normal in size with mild left basilar atelectasis . No convincing sign of pneumonia or CHF . No large effusion is seen on the supine film . No supine evidence for pneumothorax is seen . Old right clavicle mid shaft deformity is noted .
    OUTPUT:
    
Mild left basal atelectasis . No convincing signs of pneumonia or aspiration .