Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is at the upper limits of normal . Mediastinal contours are within normal limits for age . No CHF , focal infiltrate or effusion is identified . No obvious pneumothorax is detected . Linear density seen at the right lung apex immediately above the clavicle is equivocal for pneumothorax . No significant atelectasis is detected . Mild degenerative changes of the thoracic spine noted .
    OUTPUT:
    
1 . Faint linear density at right lung apex is equivocal for pneumothorax . If this is of clinical concern , then further assessment with an AP view obtained at end - expiration of the respiratory cycle could help for further assessment . 2 . Otherwise , no acute pulmonary process is identified . No focal infiltrate detected to suggest pneumonia .