Osteolipoma of the oral cavity mimicking an intrabony lesion: A case report

Abstract

Osteolipoma is a very rare type of lipoma, originating from the mature lamellar bone within the tumor. In this case report, we describe the clinical, radiographic, and histopathological features of a case of osteolipoma in the oral cavity. Our patient was a 58-year-old Iranian female presenting to the Oral and Maxillofacial Clinic of Al-Zahra Hospital, in Isfahan, complaining of a mandibular swelling in the right side. The patient had a history of breast cancer 4 years earlier, which had been treated. She also had been diagnosed with osteoma in the mandibular region 2 years earlier, for which, she had undergone a surgical procedure. Microscopic examination of biopsy specimen revealed mesenchymal tissue composed of mature adipose cells with a lobular pattern, which led to a diagnosis of lipoma with central osseous metaplasia. The patient recovered after surgery. Intraoral lipoma is extremely rare. However, it should be included in the list of differential diagnosis when encountering a lesion composed of adipose tissue in combination with osseous tissue. The prognosis of osteolipoma is similar to that of lipoma, and its management includes complete surgical resection of the tumor. Recurrence has not been reported. © 2020