Table 1.

Clinicopathological details of osteosarcoma patients and healthy controls included

	Osteosarcoma	Healthy controls
n	33	19
Male	18 (54.5%)	12 (63.2%)
Age median (range)	16 (6–56)	17 (8–45)
Location primary tumor
Distal femur	19 (57.6%)
Prox tibia	6 (18.2%)
Prox humerus	5 (15.2%)
Other long bone	3 (9.1%)
Histological subtype
Conventional	29 (87.9%)
Osteoblastic	24
Chondroblastic	3
Unusual	2
Telangiectatic	4 (12.1%)
High-grade surface	1 (3.0%)