BCL2 and marginal zone lymphoma: Of interest, 6 of 15 (40%) FL cases with morphologically intact IgD+ mantle zones were immunohistochemically negative for the BCL2 protein and also did not harbour the t(14;18) in the FISH analysis, a negativity rate higher than expected for conventional FL grade 1/2, with a 10–15% reported in the literature [10], although we took care to exclude FL mimics, such as nodal marginal zone lymphoma.