Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP chest radiograph is limited by patient rotation and low lung volumes . Tracheostomy tube remains in the upper trachea . Perihilar and right lower lobe opacities are similar to prior exams in ___ . No large pleural effusion is present . There is no pneumothorax . The cardiac and mediastinal contours are unchanged .
    OUTPUT:
    
Scattered perihilar and right lower lobe opacities accentuated by low lung volumes and similar to exams in ___ .