The subject of the research is a study of the diagnostic features of oral lichen planus and the application of diagnostic criteria. The aim of the research is to determine the role of pathomorphological diagnostics of oral lichen planus in making a diagnosis. Methodology. The study was conducted at the Department of Therapeutic Dentistry and Propaedeutics of Dental Diseases, the Department of Surgical Dentistry, Otolaryngology, and Maxillofacial Surgery, as well as at the clinical site of the Department of Pathological Anatomy and Forensic Medicine in the histology laboratory of the General Pathology Department of the Central Research Laboratory of the Ural State Medical University (Yekaterinburg). The study was based on an analysis of clinical examination data from 32 patients and a study of histological specimens from biopsy specimens. Results. Surgical biopsy of patients with suspected oral lichen planus revealed discrepancies between clinical and histological diagnoses. As the clinical presentation of oral lichen planus often overlaps with other diseases, and applying the new American Academy of Oral and Maxillofacial Pathology criteria showed that not all specimens contained all required pathological features, the reliability of these criteria in practice remains uncertain. Conclusion. A comprehensive approach combining clinical and histopathological analysis is crucial for diagnosing and managing lichen planus. This is mandatory not only for initial diagnosis but also for patient monitoring, particularly in cases of suspected malignancy.
Dregalkina et al. (Fri,) studied this question.