Diseases in the oral cavity of infants are very different from those of adults because the oral tissues of infants are growing, and the oral conditions such as food and drink or dental treatment materials are different. There are many indistinct points in the case of cysts or tumors of infants as there are few case reports on them. The authors have experienced the following interesting cases :
Case 1 An 11-month-old male with a mucous cyst located in the left palate glossal arch.
Case 2 A 1-year-old female with a fibroma located in the median palate.
Case 3 A 1-year 8-month-old male with an embryonal rhabdomyosarcoma located in the left margin of the posterior tongue.
Each patient was treated by resection under general anesthesia and the postoperative course was uneventful. Cases like the above are relatively infrequenct among infants. It is ordinarily thought that both mucous cysts and fibroma are caused by local factors and inflammation. Refering to our cases, we suggest that such diseases as mucous cysts and fibroma are related to antecedent embryological causes.
