A case of adenoid cystic carcinoma in the palate with insidious growth of deep structuers.

We came across a case of adenoid cystic carcinoma in the left palate. The patient, a 47 year-old woman, was treated by surgical resection. The tumor invaded insidiously to deep structures (mucous of right nasal cavity floor and highest part of nasal septum). The frozen section was very useful and important for complete resection of this tumor. We re newed understanding of insidious growth of adenoid cystic carcinoma, and the difficulty of complete resection of this tumor.Postoperatively, the patient was given tegaful (750mg/day) to the present and, after 11 months, was free from local recurrence and distant metastasis.