Table 2.

Low- and high-risk stage II melanoma (29).

	Low risk (stage IIA)	High risk (stage IIB/C)
Thickness	≤2 mm + ulceration ≤4 mm without ulceration	>2 mm + ulceration >4 mm (regardless ulceration)
Lymph node involvement	No	No
Melanoma-specific survival at 5 years (19)	94%	85% \ 82%
Melanoma-specific survival at 10 years (19)	88%	82% \ 75%