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Impact of smoking on imiquimod response in patients with vulval intraepithelial neoplasia

Vulval intraepithelial neoplasia (VIN) is a precancerous condition that may progress to invasive malignancy. VIN is associated with human papillomavirus (HPV) infection in most cases, and with inflammatory skin disorders in a smaller proportion of patients. Treatment of VIN has traditionally been surgical excision; however, topical treatments, including imiquimod cream, are becoming increasingly used. Patient factors influencing response to imiquimod therapy, in particular smoking, have not yet been published.