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De Perrot classification of the solitary fibrous tumor of the pleura
| Stadium | Tumor morphology | Recurrence prognosis |
|---|---|---|
| 0 | Stem SFT with no signs of malignancy | 2% |
| I | Adjacent SFT with no signs of malignancy | 8% |
| II | Stem SFT with histological evidence of malignancy | 14% |
| III | Adjacent SFT with histological evidence of malignancy | 63% |
| IV | Multiple synchronous metastatic tumors | |
SFT: solitary fibrous tumor
