<?xml version='1.0' encoding='UTF-8'?><xml><records><record><source-app name="HighWire" version="7.x">Drupal-HighWire</source-app><ref-type name="Journal Article">17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Shopper, Thomas P</style></author><author><style face="normal" font="default" size="100%">Brannon, Robert B</style></author><author><style face="normal" font="default" size="100%">Stalker, William H</style></author></authors><secondary-authors></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Proliferative verrucous leukoplakia: An aggressive form of oral leukoplakia</style></title><secondary-title><style face="normal" font="default" size="100%">American Dental Hygienists Association</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2004-06-01 00:00:00</style></date></pub-dates></dates><pages><style  face="normal" font="default" size="100%">7-7</style></pages><volume><style face="normal" font="default" size="100%">78</style></volume><issue><style face="normal" font="default" size="100%">3</style></issue><abstract><style  face="normal" font="default" size="100%">Proliferative verrucous leukoplakia (PVL) is an aggressive form of oral leukoplakia that is persistent, often multifocal, and refractory to treatment with a high risk of recurrence and malignant transformation. This article describes the clinical aspects and histologic features of a case that demonstrated the typical behavior pattern in a long-standing, persistent lesion of PVL of the mandibular gingiva and that ultimately developed into squamous cell carcinoma. Prognosis is poor for this seemingly harmless-appearing white lesion of the oral mucosa.</style></abstract></record></records></xml>