Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest views were obtained with patient in upright position . Comparison is made with the next preceding similar study of ___ . Previously described atelectatic appearance of right apical lung with centrally located translucencies is unchanged . The same holds for the previously described left subclavian central venous line seen to terminate in the mid portion of the SVC . The left - sided hemithorax is carefully inspected and compared with the previous study . The frontal view , one observes a more crowded appearance of the pulmonary vasculature and slightly more marked pulmonary parenchymal density that obliterates the diaphragmatic contour medially on the left side . When comparison is extended to the lateral views , one observes likewise a slightly hazy density corresponding to the posterior segment of the left lung lobe . There is , however , no evidence of any new pleural effusion obliterating the pleural sinuses and no pneumothorax is seen in the apical area .
    OUTPUT:
    
Comparison with the next previous similar study suggests development of a small hazy density in the left lower lobe posterior segment . Noteworthy is that similar comparison between the preceding study of ___ and examination of ___ did not demonstrate a similar interval change . It is therefore concluded that there is a new pulmonary parenchymal infiltrate of bronchopneumonic character in the left lower lobe posterior segment . Followup examination after appropriate treatment is recommended in about one week . There are no other significant interval changes identified .