Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP single view of the chest has been obtained with patient in semi-upright position . Comparison is made with the next preceding similar study of ___ . Patient 's inspirational effort is very shallow resulting in much higher positioned diaphragms than on the previous portable study . This results in crowded appearance of the pulmonary vasculature , but there is no conclusive evidence for any new parenchymal infiltrates . On the left base , a crowded vasculature is more marked and the possibility of an atelectasis is given . The right - sided pulmonary vasculature does not disclose an advanced pulmonary congestive pattern . There is no evidence of pneumothorax in the apical area .
    OUTPUT:
    
Technically seen suboptimal portable chest examination related to poor inspirational effort . Probably left lower lobe atelectasis . No conclusive evidence for pneumonia .