title: [Serum sickness induced by rituximab infusion; report of two cases with hematological malignancies].
abstract: We report 2 cases of serum sickness after rituximab infusion. Case 1 is a patient with Waldenström's macroglobulinemia, and case 2 is a patient with marginal-zone B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) type and Sjögren's syndrome. Both patients had polyclonal hypergammaglobulinemia, were treated with rituximab monotherapy, developed serum sickness between 9 and 17 days after the first rituximab infusion, developed fever and arthralgia, and improved soon after corticosteroid treatment. Serum sickness after rituximab treatment for hematological malignancies is very rare as far as we know. We identified three risk factors of serum sickness after rituximab infusion from previous reports and our cases; administration of rituximab alone, the existence of Sjögren's syndrome, and polyclonal hypergammaglobulinemia.
authors.affiliation: Department of Internal Medicine, National Hospital Organization Kumamoto Medical Center, Kumamoto.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Matsui
authors.forename: Michihiro
authors.initials: M
authors.lastname: Hidaka
authors.forename: Toshiro
authors.initials: T
authors.lastname: Kawakita
authors.forename: Yoshiko
authors.initials: Y
authors.lastname: Inoue
authors.forename: Tatsunori
authors.initials: T
authors.lastname: Sakai
authors.forename: Naoko
authors.initials: N
authors.lastname: Harada
authors.forename: Shigeki
authors.initials: S
authors.lastname: Takemoto
authors.forename: Shoichi
authors.initials: S
authors.lastname: Nagakura
authors.forename: Atsuko
authors.initials: A
authors.lastname: Tsukamoto
authors.forename: Tetsuyuki
authors.initials: T
authors.lastname: Kiyokawa
authors.forename: Fumio
authors.initials: F
authors.lastname: Kawano
mesh_terms: D000368:Aged; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000009:adverse effects*; D058846:Antibodies, Monoclonal, Murine-Derived; D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006942:Hypergammaglobulinemia / Q000150:complications; D007262:Infusions, Intravenous; D018442:Lymphoma, B-Cell, Marginal Zone / Q000150:complications / Q000188:drug therapy*; D008875:Middle Aged; D012307:Risk Factors; D000069283:Rituximab; D012713:Serum Sickness / Q000209:etiology*; D012859:Sjogren's Syndrome / Q000150:complications; D008258:Waldenstrom Macroglobulinemia / Q000188:drug therapy*
chemical_list: D000911:Antibodies, Monoclonal; D058846:Antibodies, Monoclonal, Murine-Derived; D000970:Antineoplastic Agents; D000069283:Rituximab