Abstract
This is a case of teratoma of the buccal mucosa in an infant. Histological examination revealed that this tumor consisted of two germ-layers, i. e., ecto- and meso-dermal tissue, with several toothgerms.
We further reviewed 70 cases of teratomas in the oral and nasopharyngeal regions reported in Japanese literature, and the following findings were obtained.
1. This tumor occurred predominantly in infants under one year of age, and about78% of the reported cases were females.
2. This tumor occurred most frequently in the nasopharyngeal region, and the palatal region when limited to the oral cavity.
3. Complicated deformity (cleft lip and palate, etc. ) was often observed.
