Objective: Tongue lesions constitute a considerable proportion of the oral lesions. Previous studies on tongue lesions were based on clinical studies. There has been a scarcity of the studies which are based on histopathological examination. This study aimed to determine the prevalence, demographic, and pathologic features of tongue lesions from Thailand.
Materials and methods: Biopsy records of the participating institutions were reviewed for lesions on the tongue diagnosed during 1998 to 2017. Demographic data were collected from the biopsy records. Locations were arbitrarily classified as dorsal, lateral, and ventral surfaces, tip of the tongue, and the combination of sites. Lesions of the tongue were classified as reactive/inflammatory, developmental, immune-mediated, cystic, benign, premalignant, malignant, infectious, and miscellaneous categories.
Statistical analysis: Data were analyzed by descriptive statistics using SPSS version 20.0.
Results: Of the 44,188 accessioned cases, 2,153 cases (4.87%) were diagnosed from the tongue. The age of the patients ranged from 3 to 93 years with the mean ± standard deviation = 45.26 ± 20.48 years. The female-to-male ratio was 1.49:1. The majority of the tongue lesions were encountered at the lateral border of the tongue (47.66%). Most of the tongue lesions in the present study (53.74%) fell into the reactive/inflammatory category. Irritation fibroma was the most prevalent lesion (18.99%) followed by squamous cell carcinoma (16.91%), and mucus extravasation phenomenon (14.26%), respectively.
Conclusions: This study offers new perspective into the study of tongue lesions apart from the clinically based studies. It also demonstrates the difference between the pediatric and the elderly patients. This study provides invaluable database for clinicians when formulating the clinical diagnosis of tongue lesions.