First, a diagnosis must be made. If the lesion is a seborrheic keratosis, then shave excision, electrodesiccation or cryosurgery may be performed, usually leaving very little if any scarring.[citation needed] If the lesion is suspected to be a skin cancer, a skin biopsy must be done first, before considering removal. This is unless an excisional biopsy is warranted.[citation needed] If the lesion is a melanocytic nevus, one has to decide if it is medically indicated or not[citation needed]