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Patterns of recurrence in participants who experienced recurrence during the study period
| Recurrence pattern | Observation | Radiotherapy | Overall |
|---|---|---|---|
| Single: local | 2 | 1 | 3 |
| Single: regional | 3 | 2 | 5 |
| Single: distant | 4 | 5 | 9 |
| Multiple: L-L | 1 | 0 | 1 |
| Multiple: L-D | 1 | 0 | 1 |
| Multiple: R-R-D-L | 0 | 1 | 1 |
| Multiple: D-D | 0 | 1 | 1 |
L, local; D, distant; R, regional
