<prompt> Which of the following is true regarding Rheumatoid arthritis -Typically involves small and large joints symmetrically but spares the cervical spineCauses pleural effusion with low sugarPulmonary nodules are absentEnthesopathy prominent  <response>: The typical picture of BL symmetrical inflammatory polyarthritis involving small joints initially and large joints later on, with sparing of the axial skeleton except the cervical spine is very likely, rheumatoid arthritis.RA causes pleural effusion with low glucose pH.Enthesopathy is not seen in RA. 