Inclusion Criteria:

• Patient had recurrence of osteosarcoma, localized to the lungs, had complete surgical removal of all lung nodules, or are deemed fully resectable.
• Patient had histological confirmed diagnosis of osteosarcoma of the recurrent sample.
• Patient had recurrence of osteosarcoma in the lung following standard therapy including: adriamycin, cisplatin, ifosfamide and methotrexate.
• Patient is ≥ 15 and < 75 years of age.
• Weight ≥ 34 kg.
• ECOG performance score of 0-2.
• Adequate bone marrow function.
• Adequate renal function.
• Adequate hepatic function.
• Adequate cardiac function.
• Women of childbearing potential must have had a negative pregnancy test (urine or serum) ≤ 7 days prior to enrollment, and willingness to use an acceptable method of contraception during participation in the study and for 3 months after the last dose.
• Randomization must occur ≤ 6 weeks after complete surgical resection.
• Patient or legal guardian has signed informed consent.

Exclusion Criteria:

• Presence of metastatic disease in other locations in addition to the lung.
• Disruption of the lung pleura by tumor.
• Paget's disease.
• Patient currently using, or has previously used CYP3A4 inducers or inhibitors within 2 to 14 days prior to the initiation of oral therapy.
• Known hypersensitivity to other Src/Abl non-receptor kinase inhibitors.
• Evidence of interstitial lung disease.
• Any concurrent condition which in the investigator's opinion makes it undesirable for the patient to participate in the trial or which would jeopardize compliance with the protocol.
• Myocardial infarction within one year prior to study entry.
• Bleeding diathesis, resulting in symptomatic bleeding.
• Patient is pregnant or nursing/breast-feeding.
• Patient received chemotherapy, biological or investigational agent ≤ 28 days prior to enrollment.
• Patient experiencing unresolved toxicity ≥ CTCAE grade 2 (except alopecia) from previous agents.