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Essentials of oral manifestations of leukemia for the dental practitioner.

Oral lesions may be the initial or only manifestation of leukemia and can be the key to early diagnosis. The varied nature of presenting signs and dentists' general lack of familiarity with oral presentations makes diagnosis challenging. This retrospective review reports a series of cases of leukemia to familiarize dentists with the oral manifestations and facilitate earlier diagnosis or recognition of relapse of this life-threatening disease. Following institutional review board approval, the University of Florida Oral Pathology Biopsy Service archive from 1994 to 2018 was queried for all oral biopsies resulting in a diagnosis of leukemia. Cases with insufficient diagnostic information or extraoral manifestations were excluded. Demographic, clinical, and histologic findings were tabulated. Ten cases with 12 biopsy sites were identified. Men (n = 6) were affected more commonly. The mean age of the patients was 58.4 years (range of 17 to 88 years). The gingiva was the most frequently biopsied site (n = 6; 50%). Importantly, 40% of the patients (n = 4) had no prior diagnosis of leukemia. A wide spectrum of clinical impressions was rendered, pyogenic granuloma being the most common, and the reported duration of lesions ranged from several weeks to 6 months. The rarity of patients presenting with leukemia may lead to low levels of clinical suspicion, misdiagnosis, and delays in treatment. However, oral lesions may be the first and only manifestation of leukemia, and clinicians should be aware of the clinical characteristics of these oral presentations to ensure early diagnosis and treatment, thereby helping to reduce disease-related morbidity and mortality.