Management of patients with Waldenström macroglobulinemia: The importance of excluding Hyperviscosity syndrome

Purpose: Waldenström macroglobulinemia (WM) is a rare non-Hodgkin lymphoma characterized by the presence of a monoclonal immunoglobulin M protein (M-protein). We report a case of WM with increasing M-protein levels and subsequent retinal vascular alterations consistent with hyperviscosity retinopathy, [for full text, please go to the a.m. URL]