Abstract
It is very rare that oral tonsil tissue emerges ectopically, and in cases of ectopic tonsils, the diagnosis is difficult. Oral tonsils, which are composed of ectopic sublingual tonsil tissue, generally manifest as asymptomatic, nonulcerated, freely movable nodules.
We here report a case of a 49-year-old woman with ectopic tonsil tissue on the oral floor. Her main symptom was swelling of the left sublingual hold. Biopsy revealed that part of the epithelium of the specimen was deeply invaginated into the stroma, and lymphoid tissue was observed around the invaginated epithelium, indicating tonsil organization. Accordingly, this case was diagnosed as sublingual oral tonsil.
