PRIMARY	SNB
Thickness < 1 mm	Yes □  No □
Thickness < 1-4 mm	Yes □  No □
Thickness > 4 mm	Yes □  No □
If presence of primary melanoma < 1mm. Do you perform as well SNB? if:
Nodular Melanoma	Yes □  No □
Clark IV-V	Yes □  No □
Ulcerated	Yes □  No □
Regression	Yes □  No □
Patient choice	Yes □  No □