A 3 8 years man complained enlargement of a long-standing warty growth lesion on left pre-auricular region. He claimed that the lesion was present since adolescence. However. the size of lesion seemed increase in recent half year. There was totally asymptomatic. Clinical examination revealed a pale brownish warty plaque on left pre-auricular region. Explain the differential diagnoses, your diagnosis, the prognosis of this lesion and investigation it?
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