Research Article
High-Grade Osteosarcoma of the Foot: Presentation, Treatment, Prognostic Factors, and Outcome of 23 Cooperative Osteosarcoma Study Group COSS Patients
Table 4
Tumor response to preoperative chemotherapy.
| | Tumor response | Number of patients with localized disease | Number of patients with metastatic disease | Number of all patients |
| | Good (less than 10% viable tumor cells) | 3 | 1 | 4 | | Poor (more than 10% viable tumor cells) | 11 | 2 | 13 | | Not applicable (primary surgery) | 5 | 0 | 5 | | Not documented | 1 | 0 | 1 |
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