Abstract
Clinical and histologic morphology of oral hairy leukoplakia in 85 HIV-positive patients were studied. Differential diagnosis of oral hairy leukoplakia in comparison with the normal lingual and buccal epithelium from both HIV-positive and HIV-negative patients, and with other tongue conditions was also examined. Oral hairy leukoplakia lesions were located on the lateral borders of the tongue and showed a corrugated/hairy aspect in the majority of cases. Hyperparakeratosis, hyperplasia/acanthosis, and a papillated epithelial surface were common findings. A parakeratin band and ballooning cells were present in 60% and 99% of the cases, respectively. Some of the histologic features of oral hairy leukoplakia were present in the normal lingual epithelium of both HIV-negative and HIV-positive patients as well as in other tongue conditions. Thus, many histologic features of oral hairy leukoplakia appear not to be specific.
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