Version July 2025
| Essential data |
| Diagnosis: Malignant melanoma, in situ, or invasive |
| Breslow thickness: mm |
| Ulceration: Present or absent |
| Mitoses: Number/mm2 |
| Microscopic satellites: Present or absent |
| Vascular invasion: Present or absent |
| Surgical margins: Adequacy |
| Other prognostic data |
| Clark Level: I, II, III, IV, V |
| Growth phase: Radial or vertical |
| Regression: Present or absent |
| Tumor-infiltrating lymphocytes: Present (brisk or nonbrisk) or absent |
| Histologic type (eg, superficial spreading, desmoplastic) |
