Abstract
<h3>Objectives</h3> Oral lichen planus (OLP) and oral lichenoid lesions (OLL) are close conditions that show a considerable overlap in diagnostic criteria. The aim of this study is to evaluate and describe the clinical features from a series of histologic specimens compatible with OLP and OLL diagnosed in Brazilian patients in a 15-year period. <h3>Study Design</h3> All cases histologically diagnosed as OLP and OLL and with histological reports compatible with OLP were retrieved. <h3>Results</h3> The final sample included 221 patients, including 160 females and 61 males, with a mean age of 54 years. The most common affected anatomic site was the buccal mucosa (71%), followed by the tongue (45%) and the gingiva (20%). Gingival involvement in OLL was an unusual finding. The reticular form alone was the most common clinical presentation (53%), followed by the association of reticular and atrophic/erosive/ulcerated lesions (42%). Symptoms were more frequently reported in the presence of atrophic/erosive/ulcerated lesions. <h3>Conclusions</h3> This retrospective study showed that OLP was more commonly observed as reticular lesions in the buccal mucosa of middle-aged women and that OLL was mostly characterized by the association of reticular and atrophic/erosive/ulcerated lesions.
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