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

Table 2

Therapeutic modalities used.

	Pediatric cohort		YA cohort		P value
	N	%	N	%
Surgery
Yes	33	100	34	94	0.49
No	0	0	2	6
Type of surgery
Limb salvage	31	94	30	88	0.67
Amputation	2	6	4	12
Margins
Positive	1	3	1	3	0.86
Negative	24	73	31	91
Missing	8	24	2	6
Chemotherapy
Yes	33	100	36	100	1.00
No	0	0	0	0
Histologic response to chemotherapy
Good	18	55	12	35	0.06
Poor	8	24	16	47
No neoadj chemo	1	3	5	15
Missing	6	18	1	3
Radiation therapy
Yes	4	12	5	14	1.00
No	29	85	31	86