上咽頭奇形腫

抄録

A case of nasopharyngeal teratoma in a female newborn is reported. This tumor was readily removed by a snare without any type of anesthesia.
The teratomas are generally tridermal tumors, but dermoid tumors of the nasopharynx which are bidermal in nature are frequently called nasopharyngeal teratoma. In the present case, the tumor consisted of the skin, fat tissue, connectve tissue, cartilage and mixed glands.
On one hand, these tumors are often called by the term “epignathus” or “hairly polyp”.
The pathogenesis of this rare tumor is still uncertain. Symptoms vary according to the size and the site of the tumor, but difficulty in swallowing and breathing has often been reported. There is usually little bleeding following a surgical removal, and no recurrence of this type of tumor has been described in Japan.