<prompt> Treatment of choice for melanoma is:ChemotherapySurgical excisionRadiotherapySurgery and chemotherapy  <response>: Treatment Surgical excision with Sentinel lymph node biopsy Margins to be taken depends on the tumor thickness and depth of invasion 1mm thickness - 1 cm margin 1-4 mm thickness - 2cm margin 4mm thickness - 2-3 cm margin Malignant Melanoma is a radio resistant tumor 