Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . The heart size is normal . No typical configurational abnormality is seen . Thoracic aorta and mediastinal structures are unremarkable . The pulmonary vasculature is not congested . On the right lung base , there is a parenchymal density occupying the cardiophrenic angle on the frontal view and projecting into the medial lower segment of the right middle lobe . An additional local parenchymal infiltrate is seen on the left base partially in retrocardiac position and located in the posterior segment of the left lower lobe on the lateral view . Pleural spaces are free and thus no evidence of pleural effusion . No pneumothorax in the apical area . When comparison is made with the next preceding chest examination of ___ , the patient had , at that time , small peripheral parenchymal infiltrates on the left base . The now diagnosed pneumonic infiltrate in the right middle lobe did not exist and the parenchymal densities on the left base are larger than they were at that time .
    OUTPUT:
    
Multifocal parenchymal infiltrates consistent with acute infection . Followup examination after treatment is recommended . Referring physician , ___ , was paged and reached at 5 :15 p .m .