<prompt> The most malignant form of malignant melanoma is:NodularLentigo malignaAcral lentiginous typeSuperficial spreading  <response>: Types of Malignant Melanoma Superficial spreading : MC type of MM; MC site is Torso. Nodular: 2nd MC type Most malignant Only veical growth phase MC site - Head and Neck Lentigo maligna: Least malignant; MC site is Face Acral lentiginous : Least common , worst prognosis . MC site : Sole , under great toe nail Only FDA approved adjuvant therapy for malignant melanoma -Interferon alpha 2b 