Table 6 The ABCDE of nail melanoma after Levit [39]
From: Clinical guidelines for the recognition of melanoma of the foot and nail unit
A | Age Range 20-90, peak 5th -7th decades. |
|---|---|
B | Band (nail band): Pigment (brown-black). Breadth > 3 mm. Border (irregular/blurred). |
C | Change: rapid increase in size/growth rate of nail band. Lack of change: failure of nail dystrophy to improve despite adequate treatment. |
D | Digit Involved: Thumb > hallux > index finger > single digit > multiple digits. |
E | Extension: Extension of pigment to involve proximal or lateral nail fold (hutchinson's sign) or free edge of nail plate. |
F | Family or personal history: Of previous melanoma or dysplastic nevus. |