Table 1.

The clinicopathological features of patients with osteosarcoma

Variable	Group	Cases (n)
Age, years	<20	12
	≥20	8
Gender	Male	11
	Female	9
Distant metastasis	Yes	7
	No	13
TNM stage	I–II	14
	III	6
Anatomic location	Femur/tibia	16
	Elsewhere	4
Primary tumor diameter (cm)	<5	11
	≥5	9