Table 2.
Disease Characteristics
| Total | Pediatric | Adult | P Value | |
|---|---|---|---|---|
| Total cases | 84 | 14 | 70 | |
| Tumor diameter, cm | ||||
| Mean (standard deviation) | 2.2 (1.8) | 2.3 (2.0) | 2.2 (1.8) | .82 |
| Median (interquartile range) | 1.7 (1.0–2.8) | 1.9 (1.0–2.9) | 1.7 (1.0–2.5) | |
| Multifocal, No. (%) | 41 (49) | 7 (50) | 34 (49) | |
| Extrathyroidal extension, No. (%) | 14 (17) | 3 (21) | 11 (16) | .69 |
| Lymphatic/vascular invasion, No. (%) | 7 (8.3) | 4 (29) | 3 (4.3) | .01 |
| Positive lymph nodes, No. (%) | 28 (33) | 9 (64) | 19 (27) | .01 |
| Distant metastases, No. (%) | 3 (3.6) | 0 (0) | 3 (4.3) | >.99 |
| Follow-up period, mo | ||||
| Mean (standard deviation) | 31 (18) | 32 (19) | 31 (18) | .78 |
| Median (interquartile range) | 26 (19–43) | 32 (16–44) | 26 (20–41) | |
| Positive for BRAF V600E, No. (%) | 47 (61)a | 4 (31) | 43 (67) | .03 |
a
Percents shown among 77 tumors (13 pediatric and 64 adult patient tumors) with an interpretable result.