舌に発生したbasaloid squamous cell carcinomaの1例

Basaloid squamous cell carcinoma （BSCC） is a rare aggressive malignant tumor that is a distinct variant of squamous cell carcinoma.It is mostly seen in the supraglottic larynx, hypopharynx, and base of the tongue.The prognosis of this tumor is poor because of its high risk of regional lymph node and distant metastases. In this paper, we report a case of BSCC arising in the tongue. A 58-year-old man was referred to our clinic because of pain and bleeding of the tongue. Clinical examinations revealed a papillary tumor measuring 15×15×12 mm on the right side of the tongue. The histologic diagnosis of the biopsy specimen was BSCC. The tumor was surgically extirpated by partial tongue resection. Chemotherapy and radiotherapy were given postoperatively. The patient’s postoperative course was uneventful, and he is free from disease 5 years 6 months postoperatively.