Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright AP view of the chest was provided . Patient is rotated and right CP angle is excluded . There are vague opacities in the lower lungs which could represent aspiration . No large effusion or pneumothorax . The overall cardiomediastinal silhouette appears grossly stable , though difficult to assess given patient rotation . The bony structures appear intact with degenerative changes at the shoulders .
    OUTPUT:
    
Vague opacities in the lower lungs are concerning for aspiration . Please note evaluation is markedly limited due to poor patient positioning .