Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Catheter in situ with the tip seen with in the distended right main pulmonary artery . Airspace opacification seen in the right upper and mid zones which may represent involving pulmonary infarct / hemorrhage . Low lung volumes . No pneumothorax . Spine and chest wall deformity as known . Spinal stabilization rods in situ .
    OUTPUT:
    
Catheter tip seen in the distended right main pulmonary artery .