Immunohistochemistry analysis showed that the tumor cells were positive for CD2, Bcl-2, CD43, CD56, negative for CD20, CD4, CD5, CD7, CD8, CD138, PCK, HMB45, Des, Pax-5, Bcl-6, Vim, CD34, TdT, MPO and equivocal for CD3. The gene discussed is NCAM1; the disease is neoplasm.