Recommended surgical margin width for cutaneous melanoma

Breslow thickness	Recommended excision margin
Melanoma in situ	0.5 to 1 cm
≤1 mm (T1)	1 cm
>1 to 2 mm (T2)	1 to 2 cm
>2 mm (T3 to T4)	2 cm

* For further details, please refer to UpToDate content on surgical management of cutaneous melanoma.

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