Fig. 1.

Brain MRI shows lack of typical periventricular T2 lesions but shows sparse scattered T2 hyperintensities in the deep white matter and corpus callosum, atypical for MS (arrows). B) Cervical spine MRI demonstrates of longitudinal extensive T2 hyperintensities from C2-C6 (arrows). C) Anteroposterior chest radiographs during impatient hospitalization that showed alteration in lung fields with increasing markings but not consolidation. D) FACS data demonstrating absence of CD20 population in circulating peripheral blood mononuclear cells due to rituximab E) Quantification of ANC, ALC and ANC/ALC ratio during the symptomatic phase of the infection. Arrows indicate points of maximal decline on ALC that correspondent to increase in ANC and vice versa.