Hypergammaglobulinemic purpura of Waldenström.

We report a case of a 33-year-old-woman with a one-year history of bilateral lower extremity vasculitis and laboratory evidence of hypergammaglobulinemia with otherwise unremarkable routine laboratory and rheumatologic studies. Her clinical picture, together with histopathologic evidence of leukocytoclastic vasculitis, favor a diagnosis of hypergammaglobulinemic purpura of Waldenström.