Clinicopathological features and prognosis assessment of extranodal follicular dendritic cell sarcoma

Table 4 Expression of lineage-specific and kinetic-associated molecules and EBV-encoded RNA (EBER) in nine FDC sarcomas (Cases 1-9)

Cases	CK	EMA	Vimentin	CD45	CD21	CD23	CD35	Podoplanin	CD68	S-100 protein	p53 protein1	Ki-67-LI (%)	EBER
1	-	1+	3+	-	3+	NT	1+	NT	NT	NT	3+	4	NT
2	-	-	NT	-	2+	NT	2+	NT	NT	-	2+	15	NT
3	-	1+	2+	-	2+	3+	-	3+	NT	-	2+	1	-
4	-	-	3+	-	3+	2+	2+	-	-	1+	2+	8	-
5	-	-	3+	-	2+	2+	3+	2+	1+	2+	2+	15	-
6	-	-	NT	-	1+	2+	-	-	1+	1+	-	10	+
7	-	-	2+	-	1+	3+	3+	-	-	-	2+	40	-
8	-	-	1+	-	3+	2+	-	2+	2+	1+	2+	20	-
9	-	-	2+	-	1+	2+	1+	-	-	-	2+	35	-

¹Evaluated by the percentages of positive tumor cells, although majority of the positive cells showing weak nuclear immunoreactivity. Immunoreactivities expressed as strong (3+), moderate (2+), weak (1+) and negative (-); NT: Not tested.