Table 1.
Demographic and Clinical Summary
| Variables | Mocellin (n = 1132) | Michigan data (n = 2313) |
|---|---|---|
| Sex | ||
| Female | 44.5% | 37.4% |
| Male | 55.5% | 62.6% |
| Age (yr) | ||
| Median | 54 | 54 |
| Range | 14–85 | 16–95 |
| Breslow (mm) | ||
| Median | 1.61 | 1.7 |
| Range | 0.14–35 | 0.35–28 |
| T1 (< 1 mm) | 23.8% | 10.5% |
| T2 (1–2 mm) | 38.9% | 48.4% |
| T3 (2–4 mm) | 24.6% | 28.2% |
| T4 (> 4 mm) | 12.7% | 12.4% |
| Unknown | - | 0.5% |
| Clark | ||
| II | 5.1% | 0.6% |
| III | 33.1% | 7.9% |
| IV | 54.9% | 65.9% |
| V | 6.9% | 2.7% |
| Unknown | - | 23.0% |
| Ulceration | ||
| Present | 29.7% | 23.7% |
| Absent | 70.3% | 73.7% |
| Unknown | - | 2.6% |
| Regression | ||
| Present | 47.1% | 13.4% |
| Absent | 52.9% | 84.5% |
| Unknown | - | 2.2% |
| Histological subtype | ||
| SSM | 55.0% | 50.7% |
| NM | 34.0% | 20.6% |
| Others | 11.0% | 28.8% |
| Mitotic index | ||
| High (> 5 mm^2) | 30.8% | 20.5% |
| Medium (1–5 mm^2) | 31.8% | 57.8% |
| Low (<1 mm^2) | 37.4% | 15.7% |
| Unknown | - | 6.0% |