Table 3.
Distribution by AJCC Stage and ATA Risk Category in 4881 Differentiated Thyroid Cancer Patients <55 Years Old at Diagnosis
| ATA risk of recurrence category | ||||
|---|---|---|---|---|
| AJCC stage | Percent within AJCC stage | Low | Intermediate | High |
| I | 98% (4797/4881) | 38% (1799/4797) | 56% (2692/4797) | 6%a (306/4797) |
| II | 2% (84/4881) | — | — | 100%b (84/84) |
| Total (all stages) | 4881 | 1799 | 2692 | 390 |
a
Classified as ATA high risk on the basis of the presence of gross extrathyroidal extension (any N, T3b/T4a/T4b, M0).
b
Classified as ATA high risk on the basis of M1 disease (any T, any N, M1).