Case Report

Waldenstrom’s Macroglobulinemia: A Report of Two Cases, One with Severe Retinopathy and One with Renal Failure

Figure 2

Immunostaining of lymphoplasmacytic lymphoma (LPL) cells in the bone marrow clot preparation from Case 1. The LPL cells were diffusely positive for CD20 but only sporadically positive for CD38 (original magnification, ×400).