<prompt> A genodermal disease that can cause skin malignancy areXeroderma pigmentosaNeurofibromatosisActinic keratosisPorphyria cutanea tarda  <response>: Xeroderma pigmentosa is a genodemaatosis which can cause skin malignancy.Neurofibromatosis a genodermatosis also predisposes to malignancy, but it is extra-cutaneous malignancy not skin malignancy. 