Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Allowing for rotation , cardiomediastinal contours are within normal limits , and lungs and pleural surfaces are clear except for a questionable 1 .3 cm nodular opacity at the left apex and a small linear focus of scar or atelectasis at the right lung base . Scoliosis is noted .
    OUTPUT:
    
Questionable left apical nodule , very likely due to superimposition of normal structures on this rotated radiograph . Initial further evaluation with PA , lateral and apical lordotic views of the chest would be helpful to exclude the possibility of a true pulmonary nodule this region .