무병 생존 상태로 경과 관찰 중이던 비인두암 환자에서 새롭게 발견된 후인두 내 림프상피암종에 대한 증례: 미분화형 비인두암의 재발에 대한 논쟁

Abstract

Lymphoepithelial carcinoma is a rare subtype of head and neck malignancy. Histologically, it is an undifferentiated carcinoma accompanied by a prominent reactive lymphoplasmacytic infiltrate. We report a case of anewly found lymphoepithelial carcinoma in the retropharynx of a patient who had been diagnosed and treated as nasopharyngeal carcinoma with multiple metastasis; the case could not be ruled out as a recurrence of nasopharyngeal carcinoma ac-cording to recent World Health Organization pathology guideline.