TABLE 2.
Surgical features of LM/LMM without recurrence
| PRE-OP LESION AREA (cm2) | NUMBER OF STAGES | MARGIN FOR TUMOR CLEARANCE (mm) | |
|---|---|---|---|
| By tumor type | |||
| LM (N=55) | 1.3±0.2 | 1.8±0.2 | 6.6±0.6 |
| LMM (N=10) | 2.0±0.7 | 1.7±0.5 | 9.0±1.5 |
| LM/LMM by stage | |||
| Stage 1 (N=34) | 1.5±0.3 | 1 | 4.2±0.3 |
| Stage 2 (N=18) | 1.3±0.2 | 2 | 6.1±0.7* |
| Stage 3 (N=7) | 1.8±0.6 | 3 | 6.8±0.8** |
| Stage 4+ (N=5) | 2.2±0.7 | 5.4±0.5 | 15.7±2.5*** |
| LM by site | |||
| Cheek (N=17) | 1.6±0.3 | 2.5±0.4¥ | 8.7±1.7¥ |
| Scalp/forehead/temple (N=7) | 1.9±0.9 | 1.6±0.2 | 6.2±1.3 |
| Nose (N=5) | 1.1±0.5 | 2.2±0.7 | 4.9±1. |
| Chin/mandible (N=4) | 1.3±0.6 | 1.5±0.3 | 7.5±1.3 |
| Neck (N=2) | 0.5±0.1 | 1 | 2.8±0.2 |
| Ear (N=3) | 0.5±0.1 | 1.3±0.3 | 7.5±0.5 |
| Extremity (N=11) | 1.7=0.6 | 1.6=0.2 | 5.5±0.6 |
| Trunk (N=6) | 0.9=0.2 | 1.2=0.2 | 4.5±0.7 |
| Subtotal, head/neck (N=41) | 1.4=0.2 | 2=0.2 | 7.1±0.8 |
| Subtotal, trunk/extremity (N=17) | 1.4=0.3 | 1.5=0.2 | 5.1±0.4 |
| Total (N=55) | 1.5=0.2 | 1.8=0.2 | 6.6±0.6 |
Pre-operative lesion area and margin for tumor clearance measured as described in Methods.
Results are shown as mean value ± standard error.
*
Stage 2 margins significantly greater than stage 1 margin (p<0.01).
**
Stage 3 margins significantly greater than stage 1 margin (p<0.005).
***
Stage 4+ margins significantly greater than stage 1 (p<0.0001), stage 2 (p<0.001), and stage 3 (p<0.005).
¥
Cheek number of stages and margin significantly greater than LM at noncheek sites (p<0.04)