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The number of each clinical stage of thymic epithelial tumours which were classified by the summed score
| Clinical stage | Score 0 | Score 1 | Score 2 | Score 3 | Score 4 | Score 5 | Total |
| I | 4 | 4 | 3 | 1 | 5 | 0 | 17 |
| II | 1 | 0 | 1 | 1 | 2 | 0 | 5 |
| III | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| IV | 0 | 0 | 1 | 2 | 5 | 3 | 11 |
| Total | 5 | 4 | 5 | 4 | 13 | 3 | 34 |
