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ScientificWorldJournal. 2014;2014:746874. doi: 10.1155/2014/746874. Epub 2014 Oct 29.

Clinicopathologic correlation of oral lichen planus and oral lichenoid lesions: a preliminary study.

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Department of Oral Medicine, Department of Oral Medicine, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia.
Division of Molecular Medicine, Rudjer Boskovic Institute, 10000 Zagreb, Croatia.
Department of Pediatric Dentistry, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia.
School of Medicine, Institute of Pathology, University of Zagreb, 10000 Zagreb, Croatia.


Oral lichen planus (OLP) and oral lichenoid lesions (OLL) are clinically and histologically similar lesions but their treatment planning and prognosis are different. The review of the literature indicates numerous criteria to distinguish these two lesions; however there is a lot of inconsistency. Thus, the aim of this study was to determine the correlation of histopathology and clinical OLP and OLL diagnosis and to clarify which histopathologic criteria could best distinguish these two diagnoses. A retrospective study showed that clinically diagnosed 92 OLPs and 14 OLLs have been confirmed histopathologically in 52.2% and 42.9% of cases, respectively. In addition, histopathology showed statistically significant more eosinophils (P<0.0005), plasma cells (P<0.0005), and granulocytes (P<0.05) in OLL than OLP. To establish histopathological diagnosis of OLP and OLL it should be mandatory to define the type of cells in mononuclear infiltrate, which can be associated more accurately with clinical feature and patient history. Therefore, currently accepted diagnostic criteria for OLP and OLL should be modified and validated on a larger number of patients taking into account particular distinguishing histopathological features.

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