Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Analysis is performed in direct comparison with the next preceding similar study of ___ . During the interval , the previously existing right internal jugular approach central venous line has been removed . No pneumothorax has developed . The heart size remains unchanged and is within normal limits . No pulmonary vascular congestion is present , and the lateral and posterior pleural sinuses are free of any fluid accumulation . A local perihilar infiltrate that has been noted on the previous study has cleared and presently there is no remaining pulmonary parenchymal abnormality .
    OUTPUT:
    
Resolution of previously identified left - sided perihilar infiltrate in patient undergoing chemotherapy .