<prompt> Maximum margin of excision is needed for:Malignant melanomaBCCSCCDermatofibrosarcoma protuberans  <response>: Margins of excision: Malignant melanoma: 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 BCC: If tumor is non-aggressive involving trunk or extremities -Wide Local Excision If tumor is aggressive involving vital areas, cosmetic areas and recurrent - MOHSmicrographic surgery SCC: Small or non-invasive SCC - Wide Local excision MOHS MICROGRAPHIC Surgery- Large tumors- Aggressive tumors- Tumors involving vital areas cosmetic areas- Recurrent tumorsMOHS MICROGRAPHIC SURGERY- Serial excision of tumor in small increments- Coupled with immediate microscopic analysis to ensure tumor removal- To limit resection of aesthetically valuable tissues Dermatofibrosarcoma protuberans: WLE with 2-4 cm circumferential margin removal of underlying fascia Has unpredictable radial extensions of tumorPermeate through large distances from primarynoduleIncreased risk of recurrence after simple excision2-4 cm circumferential margin is resected toprevent recurrence 