Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube is slightly rotated . Right upper lobe collapse has improved . Lung volumes remain low . A persistent left basilar airspace opacity may be due to pneumonia or aspiration . A right PICC line terminates in the upper right atrium . A VP shunt catheter has no kinks or discontinuities along its imaged course . An IVC filter and gastrostomy tube are incidentally noted in the upper abdomen .
    OUTPUT:
    
Persistent left lower lobe pneumonia or aspiration . Resolving right upper lobe collapse .