Both elements were negative for CK20,TTF-1,desmin,S-100 protein, CD57, GFAP and CD99. Conclusions EHT is a benign tumor that occurs predominantly in the lower neck region of young to middle-aged males.

• 两种细胞成分均不表达CK20、CD5、TTF-1、结蛋白、S-100蛋白、CD57、GFAP和CD99。