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Proliferative verrucous leukoplakia. Four cases with flow cytometric analysis
M A Kahn1, M E Dockter, J M Hermann-Petrin
1College of Dentistry, University of Tennessee Health Science Center, Memphis.
Oral Surgery, Oral Medicine, and Oral Pathology
|October 1, 1994
Summary
Flow cytometric analysis may aid in the early diagnosis of proliferative verrucous leukoplakia (PVL), a precancerous oral lesion. This method identified DNA aneuploid cell lines in all studied PVL cases, suggesting its potential for earlier detection and treatment.
Area of Science:
- Oral pathology
- Oncology
- Cytometry
Background:
- Proliferative verrucous leukoplakia (PVL) is an aggressive, precancerous oral lesion with variable clinical and histopathologic presentations.
- Early diagnosis of PVL is challenging due to its initially benign appearance, yet it frequently recurs aggressively.
- PVL can progress from hyperkeratosis to invasive squamous cell carcinoma.
Observation:
- This study investigated the utility of flow cytometric analysis for early PVL diagnosis.
- Flow cytometry was performed on 27 formalin-fixed paraffin-embedded PVL specimens.
- DNA aneuploid cell lines were detected in all PVL cases examined, with DNA index ranging from 1.1 to 2.6.
Findings:
- All proliferative verrucous leukoplakia cases exhibited DNA aneuploid cell lines via flow cytometry.
- The abnormal DNA index was consistently observed throughout the sampling period in the studied patients.
- Flow cytometric analysis revealed distinct DNA content abnormalities in PVL specimens.
Implications:
- Flow cytometric analysis shows promise as an adjunctive tool for the early recognition of proliferative verrucous leukoplakia.
- Early detection through flow cytometry could facilitate more timely and aggressive therapeutic interventions for PVL.
- This technique may improve patient outcomes by enabling earlier management of this high-risk oral precancer.