Table 3.

Immunohistochemical findings of primary non‐tonsillar oral diffuse large B‐cell lymphoma

Patient no.	EBER	CD3	CD5	CD10	CD20	CD138	BCL‐6	MUM1	Bcl‐2	Ki‐67 labeling (%)	Immunophenotype
1	–	–	–	–	+	–	–	+	+	50	Non‐GCB
2	–	–	–	–	+	–	–	+	–	85	Non‐GCB
3	+	–	–	–	+	–	–	+	+	75	Non‐GCB
4	–	–	–	–	+	–	–	+	–	60	Non‐GCB
5	–	–	–	–	+	–	+	+	+	90	Non‐GCB
6	–	–	–	+	+	–	+	–	+	80	GCB
7	+	–	–	–	+	–	+	+	+	70	Non‐GCB
8	–	–	–	–	+	–	–	+	+	60	Non‐GCB
9	–	–	–	–	+	–	–	+	+	80	Non‐GCB
10	–	–	–	–	+	–	+	+	+	80	Non‐GCB
11	–	–	–	–	+	–	–	+	–	90	Non‐GCB
12	–	–	–	+	+	–	+	+	–	50	GCB
13	–	–	–	+	+	–	+	–	+	55	GCB
14	–	–	–	–	+	–	–	+	–	90	Non‐GCB
15	–	–	–	–	+	–	–	+	+	90	Non‐GCB
16	–	–	–	+	+	–	+	–	–	50	GCB
17	–	–	–	–	+	–	+	+	–	65	Non‐GCB
18	–	–	–	–	+	–	+	+	–	80	Non‐GCB
19	–	–	–	–	+	–	–	+	–	90	Non‐GCB
20	–	–	–	–	+	–	+	+	+	40	Non‐GCB
21	–	–	–	–	+	–	–	+	+	60	Non‐GCB

EBER, Epstein–Barr virus‐encoded small RNA; GCB, germinal center B‐cell.