<prompt> A tumour arising in a burns scar is likely to beBasal cell carcinomaSquamous cell carcinomaMalignant melanomaFibrosarcoma  <response>: SCC is a malignant tumour of keratinising cells of the epidermis or its appendagesSCC is the second most common form of skin cancer after BCCIt is strongly-related to cumulative sun exposure and damage SCC is also associated with chronic inflammation chronic sinus tracts, pre-existing scars, osteomyelitis, burns, vaccination points and immunosuppression. When an SCC appears in a scar it is known as a Marjolins ulcer.Ref: Bailey and Love, 27e, page: 605 