Osteosarcoma in Pediatric Patients and Young Adults: A Single Institution Retrospective Review of Presentation, Therapy, and Outcome

Table 1

Study population characteristics.

	Pediatric cohort		YA cohort		P value
	N	%	N	%
Gender
Male	18	55	23	64	0.47
Female	15	45	13	36
Location
Long bones	32	97	29	81	0.13
Pelvic	0	0	3	8
Other	1	3	4	11
Histology
Osteoblastic	24	73	21	58	0.28
Fibroblastic	2	6	3	8
Chondroblastic	4	12	8	22
Giant Cell	0	0	2	6
Telangiectatic	2	6	0	0
Extraskeletal	0	0	1	3
Periosteal	0	0	1	3
Missing	1	3	0	0
Size
<8 cm	15	46	12	33	0.21
>8 cm	14	42	22	61
Missing	4	12	2	6
Pathological fracture
Yes	6	18	3	8	0.29
No	27	82	33	92