[Serum sickness induced by rituximab infusion; report of two cases with hematological malignancies].

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… (More)