Osteosarcoma: A Comparison of Jaw versus Nonjaw Localizations and Review of the Literature

Table 8

Therapy for tumors needing multimodality treatment.

Age	No therapy	Chemotherapy only	Radiotherapy only	Surgery only	Chemotherapy + radiotherapy	Surgery + chemotherapy and/or radiotherapy	Total
0–19 years
𝑁=	9	33	5	6	6	311	370
%	2.4%	8.9%	1.4%	1.6%	1.6%	84.1%	100.0%
20–39 years
𝑁=	3	27	1	22	2	134	189
%	1.6%	14.3%	.5%	11.6%	1.1%	70.9%	100.0%
40–59 years
𝑁=	9	14	4	27	3	88	145
%	6.2%	9.7%	2.8%	18.6%	2.1%	60.7%	100.0%
60–79 years
𝑁=	24	17	9	57	2	26	135
%	17.8%	12.6%	6.7%	42.2%	1.5%	19.3%	100.0%
80–99 years
𝑁=	10	0	8	12	0	6	36
%	27.8%	.0%	22.2%	33.3%	.0%	16.7%	100.0%
Total
𝑁=	55	91	27	124	13	565	875
%	6.3%	10.4%	3.1%	14.2%	1.5%	64.6%	100.0%