Clinicopathologic observations of oral lipomas

In this report, 20 cases of oral lipoma treated in the First Department of Oral Surgery, Kyushu Dental College between 1978 and 1992 are reviewed. Included were two congenital cases and two multiple cases. Histologically, there were 10 simple lipomas, 9 fibrolipomas and angiolipoma.Oral lipoma is no longer a rare tumor, and over 230 cases have been reported in Japan. Among 236 oral lipomas in Japan, simple lipomas appeared more frequently in malepatients (male: female ratio 116: 76), while fibrolipomas were more common in female (male: female ratio 14: 30). The patient sex distribution between simple lipomas and fibrolipomas was significantly different (X2-tcst, P<0.005).