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A huge osteolipoma involving the coronoid process: a case report
Yosuke Fukushima1, Tomohisa Kitamura, Naoki Hayashi
1Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Saitama Medical University.
Journal of Oral Science
|March 30, 2016
Summary
Osteolipoma, a rare tumor of bone and fat, can cause trismus. Surgical removal of this zygomatic arch osteolipoma improved mouth opening significantly in a patient.
Area of Science:
- Oral and Maxillofacial Surgery
- Pathology
- Radiology
Background:
- Osteolipoma is a rare benign tumor characterized by mature bone and adipose tissue.
- Trismus, or difficulty opening the mouth, can be caused by various conditions, including tumors in the zygomatic arch region.
Observation:
- A 28-year-old male presented with trismus.
- Computed tomography (CT) and magnetic resonance imaging (MRI) revealed a well-defined soft tissue tumor (66 × 45 × 21 mm) in the inner zygomatic arch, containing bone-like tissue and primarily composed of adipose tissue.
- The mass adhered to the right coronoid process.
Findings:
- Histopathological diagnosis confirmed the tumor as an osteolipoma.
- Surgical excision (tumorectomy) was performed.
Implications:
- Tumorectomy successfully resolved the trismus, with mouth opening improving from 31 mm to 50 mm at 2-year follow-up.
- This case highlights osteolipoma as a potential cause of trismus and demonstrates the efficacy of surgical management.
- Accurate radiological assessment and histopathological examination are crucial for diagnosing and managing osteolipomas.
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