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Nodular pattern: DLBCL of GCB group positive for CD10 (a) and BCL6 (b) and negative for IRF4/MUM1 (few scattered plasma cells serve as positive intrinsic control; c). CD5 positive DLBCL of ABC type negative for CD10 (positive bile canaliculi serve as intrinsic control; d), positive for CD5 (e) and IRF4/MUM1 (f). TCRBCL with less than 10% large CD20 positive neoplastic B-cells (g) associated with numerous CD3 positive T-cells (h) and CD68 positive histiocytes (i)
