We report a case of a heterotopic lymph node arising at the dorsal surface of the tongue, which has not been previously documented. A 48-year-old woman complained of a mass in the tongue, which became increasingly noticeable during the past 3 month. Clinical examination revealed a mobile nodular, nontender mass, measuring 20×15mm, which was covered by reddish but normal mucosa. Under general anesthesia, the lesion was shelled out easily and totally from the surrounding tissue. Histologically, a heterotopic lymph node was diagnosed. The relevant literature is reviewed on the mechanism of occurrence.
