作者报道了一例五岁儿童在舌体上生长的皮样囊肿之罕见病例,患儿出生时舌背上即存在一个小结节,手术摘除时发现此结节与一个窦道相连,此窦道也在出生时即存在,与舌肌内的囊肿相连,切除后未复发。作者认为舌的皮样囊肿可能是先天性的,也可能是后天性的。如果为先天性的,囊肿来源于口底中线及舌背上皮残余,囊肿可位于或靠近中线发生,并与窦道相连。此窦道可由囊肿感染后形成,或是先天性的。囊肿一般伴随窦道,因此较小的囊肿,可借助窦道来发现。如囊肿是后天性的,是由于创伤时的上皮植入,可在许多部位发生,一般并不位 The authors report a rare case of a dermoid cyst growing on a tongue in a five-year-old child with a small nodule present on the back of the tongue at the time of birth. This nodule is found connected to a sinus when the surgery is performed It is also present at birth, connected with the cyst in the lingual muscle and has not relapsed after resection. The authors suggest that the dermoid cysts of the tongue may be congenital or acquired. If it is congenital, the cyst comes from the midline of the mouth and the dorsal epithelial remnant, the cyst can occur at or near the midline and connect with the sinus. This sinus can be formed by cyst infection, or congenital. Cysts generally accompany the sinus, so smaller cysts can be found by means of the sinuses. Such as cysts are acquired, is due to trauma when the epithelial implantation, can occur in many parts, the general is not bit