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  • Title: Lichen sclerosus of lips: a clinical and histopathologic study of 27 cases.
    Author: Attili VR, Attili SK.
    Journal: Int J Dermatol; 2010 May; 49(5):520-5. PubMed ID: 20534086.
    Abstract:
    BACKGROUND & METHODS: Oral lichen sclerosus (LS) has been considered uncommon and involvement of lips extremely rare. We reviewed the clinical and histologic features of 72 cases of LS with oral/genital involvement, seen in our institute from 2002 to 2007. RESULTS: Lichen sclerosus was diagnosed with exclusive genital lesions in 45, exclusive lip involvement in 20, and orogenital involvement in seven cases. Fifteen of 27 histologically confirmed lip LS lesions were considered as early inflammatory or presclerotic, eight were intermediate/progressive, and four as late resolved lesions. Lip LS presented as asymptomatic vitiligoid lesions in 70% and dermal sclerosis was demonstrable in only 44%, which was limited to the papillary layer. This was in contrast with genital LS lesions which were asymptomatic in only 12% and demonstrated both papillary and reticular dermal sclerosis in 69%. CONCLUSION: Lip LS is far less symptomatic and destructive with limited dermal sclerosis compared with genital LS. Greater awareness and histologic assessment are essential for diagnosis because of the misleading vitiligoid appearance. "Vitiligoid LS" a superficial variant proposed by Borda can be aptly applied to lip LS. Dermatologists need to be aware of this rarely reported manifestation of LS as it adds to the spectrum of oral lichenoid lesions and lichenoid dysplasia, which are suspected to have a malignant potential.
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