Table 2. Comparison of Clinicopathological Characteristics of a Matched Subset of Pediatric Melanoma Patients to Adult Melanoma Patients.
| Factors | Pediatric melanoma patients (%) (n=32) |
Adult melanoma patients (%) (n=32) |
|---|---|---|
| Gender | ||
| Male | 16 (50) | 18 (56) |
| Female | 16 (50) | 14 (44) |
| Age (years) | ||
| ≤ 18 | 15 (47) | 0 |
| > 18 but ≤ 21 | 17 (53) | 0 |
| >21 | 0 | 32 (100) |
| Tumor type | ||
| Primary | 20 (63) | 20 (63) |
| Sentinel lymph node (SLN) (+) | 12 (38) | 12 (38) |
| AJCC stage | ||
| I | 8 (25) | 9 (28) |
| II | 6 (19) | 7 (22) |
| III | 18 (56) | 16 (50) |
|
Histological subtype (primary tumor) |
||
| Superficial spreading | 12 (38) | 13 (41) |
| Nodular | 12 (38) | 7 (22) |
| Atypical nevus | 2 (6) | 0 |
| Acrolentiginous | 0 | 7 (22) |
| Unclassified | 6 (19) | 5 (16) |
| Primary site | ||
| Extremities | 11 (34) | 18 (56) |
| Head/Neck | 12 (38) | 9 (28) |
| Trunk | 9 (28) | 5 (16) |
| Breslow thickness (mm) | ||
| < 1.00 | 9 (28) | 10 (31) |
| 1.01-2.00 | 9 (28) | 7 (22) |
| 2.01-4.00 | 8 (25) | 10 (31) |
| > 4.00 | 6 (19) | 5 (16) |
| Ulceration | ||
| Present | 7 (22) | 7 (22) |
| Absent | 22 (68.8) | 22 (69) |
| Unknown | 3 (9.4) | 3 (9) |
| Mitotic index | ||
| ≥11/mm2 | 7 (22) | 5 (16) |
| 5-10/mm2 | 4 (13) | 3 (9) |
| 1-4/mm2 | 20 (63) | 19 (59) |
| Unknown | 1 (3) | 5 (16) |