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Comparison between previous and current study.
| Year | Author | No. of cases | Metastatic rate | Extrapulmonary metastatic rate | Pulmonary metastatic rate | Common sites of the extrapulmonary metastases |
|---|---|---|---|---|---|---|
| 2007 | Schwab JH | 230 | 31% | 17% | 14% | Bone, Soft tissue, Abdomen |
| 1999 | Spillane AJ | 50 | — | 20% | — | Abdomen, Retroperitoneum |
| 1997 | Pearlstone DB | 102 | 32% | 30% | 2% | Retroperitoneum, Chest wall |
| 1996 | Kilpatrick SE | 95 | 35% | — | — | Retroperitoneum, Abdomen, Chest wall |
| 2010 | Current study | 58 | 19% | 14% | 5% | Bone, Soft tissue |
