Department of Neurology First Hospital of Jilin University Changchun 130021 Jilin Province China;
Department of Geriatrics First Hospital of Jilin University Changchun 130021 Jilin Province China;
Department of Hematology First Hospital of Jilin University Changchun 130021 Jilin Province China;
Sjögren syndrome; Infection; Disseminated histoplasmosis; Pancytopenia; Central nervous system involvement; Hematologic manifestations;