The detection of oral cancer and potentially malignant disorders in Ireland: An observational study of 100 cases

OBJECTIVE: To describe the diagnostic details of a sample of histologically diagnosed malignant and potentially malignant oral lesions from Ireland; to examine how these lesions were first detected, and by whom; and to determine whether factors influenced how these lesions were detected, who detected them, and the type of lesion diagnosed. METHODS: A retrospective review was carried out of the clinical notes relating to oral lesions histologically diagnosed as squamous cell carcinoma (SCC), carcinoma in-situ, or epithelial dysplasia from biopsies performed in hospital-based specialist units and submitted to a diagnostic pathology service based in Dublin, Ireland, between June and December 2015. In addition to sex, age, and smoking status, details were collected relating to the diagnosis, how the lesion was detected, and by whom. RESULTS: There were 100 cases reviewed: SCC (29), carcinoma in-situ (5), and epithelial dysplasia (66). There were 49 opportunistic findings: dentists detected 47 (94 percent), and 51 presenting complaints: primary care physicians (PCPs) detected 30 (60 percent). There was a lower likelihood of opportunistic findings among males (odds ratio 0.41; 95 percent CI 0.18, 0.91). CONCLUSIONS: Dentists in Ireland detected significant proportions of malignant and potentially malignant oral lesions as opportunistic findings, although opportunistic findings were less likely to occur among male patients.