JAPANESE JOURNAL OF ORAL & MAXILLOFACIAL SURGERY

Vol. 55 No. 7       2009

ISSN: 0021-5163      UBIC: 151-J

ABSTRACT

Basal cell adenoma is a benign salivary gland tumor that most frequently occurs in the parotid gland. We report a case of basal cell adenoma of the maxillary alveolus in a man aged 62 years. Histopathological examination revealed that tumor was encapsulated with fibrous tissue and had a basal-cell-like appearance with tubulotrabecular growth. Immunohistochemically, the inner tumor cells of the tubulo-ductal structures showed positive immunoreactivity for CK7, and the outer tumor cells showed positive immunoreactivity for alpha SMA and vimentin. Most of the tumor cells were positive for p63. In addition, the MIB-1 (Ki-67) labeling index was extremely low. A basal cell adenoma was thus diagnosed. Keywords: basal cell adenoma, maxillary alveolus, minor salivary gland.

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