Clinical aspects of epidermodysplasia verruciformis

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Abstract
Thirteen patients with epidermodysplasia verruciformis (EV) were studied over a period of 7 years. EV is a rare genodermatosis characterized by a generalized infection with a specific group of human papilloma virus (HPV) and a propensity for developing skin malignant tumours in 30%−50% of patients. The diagnosis of EV was confirmed by histopathological and immunohistochemical findings. Three of our patients had the benign form of EV, which is characterized by monomorphous lesions and no malignant changes, whereas 10 had the malignant form, which is characterized by polymorphic lesions and development of cutaneous malignant tumours. All EV patients with the malignant form developed multiple skin tumours (77%). They started to appear at age 20, predominantly on the forehead (50%). Most were squamous cell carcinoma, extremely aggressive and invasive, which provoked metastasis and death in two patients.