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  1. Dysplasia and DNA ploidy to prognosticate clinical outcome in oral potentially malignant disorders
    Sathasivam HP, Nayar D, Sloan P, Thomson PJ, Odell EW, Robinson M
    J Oral Pathol Med, 2021 Feb;50(2):200-209.
    PMID: 33151583 DOI: 10.1111/jop.13121
    BACKGROUND: Oral potentially malignant disorders are a clinical conundrum as there are no reliable methods to predict their behaviour. We combine conventional oral epithelial dysplasia grading with DNA ploidy analysis to examine the validity of this approach to risk assessment in a cohort of patients with known clinical outcomes.

    METHODS: Sections from diagnostic biopsies were assessed for oral epithelial dysplasia using the WHO grading system, and DNA ploidy analysis was performed using established methods. Patients reviewed for a minimum of 5 years who did not develop oral squamous cell carcinoma were classified as "non-transforming" cases. Patients that developed oral squamous cell carcinoma ≥ 6 months after the initial diagnostic biopsy were classified as having "malignant transformation."

    RESULTS: Ninety cases were included in the study. Seventy cases yielded informative DNA ploidy results. Of these 70 cases, 31 progressed to cancer. Oral epithelial dysplasia grading and DNA ploidy status were both significantly associated with clinical outcome (P 

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