A 42-year-old builder complains about a condyloma on his lower lip. It appeared 1,5 month ago. It has been significantly growing throughout the last week. Objectively: the red border of the lower lip is cyanotic and infiltrated, it has some isolated closly adhering squamae. There is a well-defined hemispherical formation 8 mm in diameter and 4 mm high in the centre. The formation is of grey-and-blue-and-red colour, it has rough surface formed by thin, closely adhering and thick-based squamae. Regional lymph nodes are enlarged, mobile, dense and painless. What is the most likely diagnosis?