cancer cervix situ melanoma carcinoma skin non years malignancy remission resected completely malignancy successfully history free skin years carcinoma melanoma melanomatous invasive malignancy free skin non cancer years unless minimum free malignancy situ skin carcinoma cervix years melanoma cancer non malignancy melanotic cancer cervix situ exceptions skin carcinoma non specific permissible cavity melanomatous invasive free cervix minimum situ oral malignancy carcinoma appropriately melanoma treated malignancy skin uterine situ non cervix