Recommended margins for wide local excision of melanoma: Removal of all tissue to the level of, and not into, the fascia is recommended.
| TUMOUR THICKNESS | MARGIN |
|---|---|
| In situ (does not penetrate the basement membrane of the epidermis) | 0.5 cm |
| ≤1.0 mm | 1.0 cm |
| >1.0-2.0 mm | 1.0-2.0 cm |
| >2.0-4.0 mm | 2.0 cm |
| >4.0 mm | 2.0 cm |
Data from Swetter et al.17