Three cases (9.4%) were small lymphocytic lymphoma (SLL) showing positive reaction to CD45, CD19, CD5, CD23 and small FSc, 2 cases (6.25%) were mantle cell lymphoma (MCL) showing positive reaction to CD45, CD19, CD5, negative reaction to CD23 and small FSc (Fig. 2), and a single case (3.12%) was diagnosed as T-cell rich B-cell lymphoma (TCRBCL) showing numerous T-cells which were CD45RO+ve, CD3+ve with small FSc. The gene discussed is FCER2; the disease is B-cell chronic lymphocytic leukemia.