Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube terminates within the mid trachea . A feeding tube courses along the esophagus and terminates out of the field of view , likely within the stomach . The lung volumes are low , which limits evaluation . Opacities are seen at the right lung base with some appearing linear and others containing air bronchograms . No pneumothorax or definite pleural effusion . There is prominence of the central vasculature without evidence for pulmonary edema . The cardiac contour is normal . Prominence of the mediastinum may reflect the presence of an azygous fissure , especially in the absence of symptoms from pathologic widening .
    OUTPUT:
    
Opacities at the right lung base are at least in part due to atelectasis given the low lung volumes , however , pneumonia can not be excluded . No baseline is available and comparison should be made to prior imaging . Apparent prominence of the mediastinum could be evaluated for stabilty as well with comparisons .