histologically diagnosed primary classical osteosarcoma in extremities
staging IIB
MRI showing no skip lesion
receive standard neo-adjuvant chemotherapy, adjuvant chemotherapy,and standard surgical treatment

NCT01669369_inc_T1
Procedure
histologically
NCT01669369_inc_T2
Qualifier
primary
NCT01669369_inc_T3
Condition
classical osteosarcoma
NCT01669369_inc_T4
Qualifier
in extremities
NCT01669369_inc_T5
Qualifier
staging IIB
NCT01669369_inc_T6
Procedure
MRI
NCT01669369_inc_T7
Negation
no
NCT01669369_inc_T8
Observation
skip lesion
NCT01669369_inc_T9
Procedure
standard neo-adjuvant chemotherapy
NCT01669369_inc_T10
Procedure
adjuvant chemotherapy
NCT01669369_inc_T11
Procedure
standard surgical treatment