A case of huge spindle cell lipoma in the floor of the mouth

Abstract

Spindle cell lipoma is a type of lipoma and is characterized by a mixture of fat spindle cells and increased fibrous tissue in adipose tissue. Reports of spindle cell lipoma in the oral region are rare in Japan. We herein report a case of spindle cell lipoma arising in the oral floor in a 69-year-old female. The patient was referred to our hospital with a chief complaint of swelling of the oral floor. T1- and T2-weighted MRI showed a high well-defined 30×25×27mm mass in the sublingual space. The tumor was excised under general anesthesia. The histopathological diagnosis was spindle cell lipoma. No evidence of local recurrence was observed during the three-year follow-up period.