“…The tumor is now mostly well differentiated, however, focal areas of invasive less differen tiated squamous carcinoma with cellular anaplasia, higher mitotic activity and ruptures of the basal membrane are not rare and found in 25 % of cases [8], On a histological basis alone, a differential diag nosis with the classical squamous carcinoma remains very difficult. The differential diagnosis is capital since the prognoses of these two tumors are totally different [3,7,13], We point out, in particular, that the verrucous carcinoma, contrary to the classical epidermoid carci noma, only rarely produces métastasés. In addition to this observa tion, it is noteworthy that those cases with métastasés had received radiation therapy, which is absolutely contraindicated for the verru cous carcinoma [10,15,17], In recent years, advances in techniques of molecular biology have allowed to suggest the role of various HPV…”