Clinicopathological features and prognosis assessment of extranodal follicular dendritic cell sarcoma

Table 6 Associations between clinicopathological parameters and recurrence risk in patients with extranodal FDC sarcoma

Pathologic parameters	Recurrence frequencies (%)	P values
Age (yr)
< 50	26/51 (51)	0.072
≥ 50	11/35 (31)
Gender
Male	15/40 (38)	0.290
Female	22/46 (48)
Size (cm)
< 5	4/25 (16)	0.003
≥ 5	19/34 (56)
Histological grades
Low	12/37 (32)	0.046
High	15/26 (58)
Mitotic counts
< 5/10 HPF	8/30 (27)	0.013
≥ 5/10 HPF	18/31 (58)
Ki-67-LI
< 10%	2/6 (25)	0.628
≥ 10%	8/14 (57)
Necrosis
Absent	17/35 (49)	0.307
Present	13/29 (45)
Treatments
Surgery alone	22/52 (42)	0.590
Surgery + adjuvant therapy	15/31 (48)
Sites
Abdominal/pelvic	18/37 (49)	0.372
Other sites	20/53 (38)