VERRUCOUS CARCINOMA IN ASSOCIATION WITH HYPERTROPHIC LICHEN-PLANUS

Neoplastic transformation of lichen planus is a rare event. However, s quamous cell carcinoma may develop in 0.3%-3% of patients with the ora l form of the disease. On the other hand, less than 30 cases arising i n cutaneous lichen planus have been reported, and only four cases of v errucous carcinoma in association with either form, one with an oral l esion and three with cutaneous lesions (one hypertrophic and one ulcer ative). This report describes the unusual progression of a hypertrophi c lichen planus plaque of the right leg to a verrucous carcinoma in a 40-year-old woman.