Parosteal lipoma of the mandible

Abstract

Introduction: Lipomata are soft-tissue mesenchymal neoplasms that are benign in nature and often asymptomatic. Lipomata commonly occur in the body, however, only 1%–5% are identified within the oral cavity, and lipomata with osseous metaplasia account for <1% of all lipomata. Materials and Methods: A PubMed literature review designating search terms including “oral” and “parosteal lipoma” or “lipoma with osseous metaplasia” or “ossifying lipoma” or “osseous lipoma” was conducted. Results: The literature review identified two previous reports of parosteal localization of lipomata in the mandible and 22 cases of lipomata with osseous metaplasia within the oral cavity. Conclusions: With the initial suspicion of a more malevolent diagnosis, this rare entity, with only two other cases identified, is important to consider in the clinician's differential diagnoses.

Parosteal Lipoma of the Femur Presenting with Impending Fracture

“…What distinguishes parosteal from other lipomas is the intimate relationship with bone, highlighting the importance of radiological-pathological correlation for establishing the diagnosis. Parosteal lipoma most commonly arises against long bones particularly along the femur and radius [5], although it has been reported throughout the skeleton including unique locations such as rib [12], clavicle [13], scapula [14], skull [15], mandible [16], fibula [17], foot [18], and hand [19].…”