Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral radiographs of the chest demonstrate clear lungs and normal hilar and cardiomediastinal contours . Although no pleural line is seen , the lung markings can not be definitively identified in the left apex . There is no pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
Lung markings are not well seen in the left apex , although a pleural line is also not identified . However , given the specificity of the patient 's symptoms , a right lateral decubitus radiograph is recommended to further evaluate for small spontaneous pneumothorax .