SPINDLE CELL LIPOMA OF THE ORAL CAVITY: CASE REPORT OF AN UNCOMMON AND DISTINCT VARIANT OF LIPOMA

Spindle cell lipoma (SCL), an uncommon histologic variant of lipoma, is a benign tumor that often occurs in the posterior neck or shoulder with rare occurrence in the oral cavity. It comprises about 1.6% of intraoral lipomatous tumors. The aim of the case report is to present the histopathologic features of a SCL. A 60-year-old woman with noncontributory medical history was examined for an asymptomatic nodule in the left buccal mucosa. The intraoral examination showed a 7-mm sessile and well-circumscribed nodule with firm consistency and smooth surface covered by slightly whitish mucosa. Excisional biopsy was carried out based on a clinical diagnosis of inflammatory fibrous hyperplasia. The histopathology demonstrated mature adipose tissue, spindle cells (CD34+), and many mast cells in a connective tissue stroma. The diagnosis of SCL was hence established. The patient is being followed up.