[Focal epithelial hyperplasia (Heck disease). Contribution on its viral origin]

Demonstration of human papilloma virus DNA (HPV-DNA) in the lesions of focal epithelial hyperplasia in an 11-year-old Turkish girl provides further proof of its viral cause. In this case characterization of HPV-DNA showed a reaction with that of type 13 and 18. This previously undescribed variant is probably the expression of a new HPV type.