In relation to basal cell carcinoma:
A. Metastasis never occursA 4mm margin on the face gives a cure rate of greater than 90%. Metastasis is extremely rare, but reported. The commonest lower lip tumour is squamous carcinoma. Pigmented BCCs are a well-recognised subtype. BCCs are familial in Gorlin’s syndrome as an autosomal dominant trait, although up to a third are de novo mutations.