CSF analysis revealed: protein 1,342, glucose 43, RBC 4,900, WBC 9. C3 and C$ complement levels were 94 and 18 respectively (normal) Anticardiolipin antibodies were negative. Serum Beta-2 microglobulin was elevated at 2.4 and 3.7 in the CSF and Serum, respectively. It was felt the patient had either a transverse myelitis associated with SLE vs. partial cord infarction related to lupus vasculopathy or hypercoagulable state. She was place on IV Decadron. Rheumatology felt that a diagnosis of SLE was likely. Pulmonary effusion analysis was consistent with an exudate. She was treated with plasma exchange and place on Cytoxan.