SSB and Castleman-Kojima disease: We found cases of a 72-year-old Japanese man with positive anti-SS-A antibody and a 50-year-old Japanese woman with positive anti-SS-A and anti-SS-B antibodies without indicative symptoms of SjS [20, 33], a case of a 25-year-old Japanese woman with possible TAFRO syndrome having primary SjS [34], and a case of a 46-year-old Japanese woman who was diagnosed with SjS during hospitalization [35].