Abstract
Verrucous carcinoma is a variant of squamous cell carcinoma and should be
distinguished from benign papilloma and well-differentiated nonverrucous
squamous cell carcinoma. It is rare tumor of the sinonasal tract. Occasionally,
conventional squamous cell carcinomatous components may be seen in verrucous
carcinoma. This entity is called a hybrid verrucous squamous cell carcinoma. We
report a case of hybrid verrucous squamous cell carcinoma occurring in the nasal
cavity and paranasal sinus of a 67-year-old male. The removed mass shows the
typical feature of verrucous carcinoma, but focally conventional squamous cell
carcinomatous area is also noted. The treatment of this case follows verrucous
carcinoma, but close follow up is mandatory because it may potentially spread to
regional lymph nodes in contrast to pure form of verrucous carcinoma.