５歳の男児にみられた多形性腺腫の１例

Abstract

Pleomorphic adenoma frequently occurs after 30 years of age but is rarely seen in childhood. We encountered a preschool 5-year-old male with pleomorhic adenoma of the palate.A hemispherical tumor with distinct margins (1.5×1.5-×1.5cm) was observed in the right transitional portion from the soft to hard palate.Pathohistological examination showed a relatively distinct fibrous capsule of the tumor, and epithelial elements and interstitial tissue intermixed to various degrees. In Japan, a relatively large number of school ehildren (13) with pleomorphic adenoma have been reported.However, the disease is rarely found in infants or preschool children, and only 4 patients including our case have been reported in Japan and Western countries. In addition, our patient is the youngest among those with pleomorphic adenoma arising in the small salivary gland, especially the palate.