This is a non-invasive melanotic lesion generally occurring on the face. Treatment with radiotherapy is preferred in areas of cosmetic and functional importance and this can achieve local control. Although this is generally a flat lesion it has irregular borders with varying degrees of pigmentation and a customised cut out is usually required. Planning target volume = GTV + 1 cm margin laterally and 0.5 cm deep margin.
45 Gy in 10# over 2 weeks with 60 kV to 160 kV photons.