Misdiagnosis of osteosarcoma as cementoblastoma from an atypical mandibular swelling: A case report

Fang,Zao; Jin,Shufang; Zhang,Chenping; Wang,Lizhen; He,Yue

doi:10.3892/ol.2016.4433

Misdiagnosis of osteosarcoma as cementoblastoma from an atypical mandibular swelling: A case report

Authors:
- Zao Fang
- Shufang Jin
- Chenping Zhang
- Lizhen Wang
- Yue He
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Affiliations: Department of Oral Maxillofacial Head and Neck Oncology, Faculty of Oral and Maxillofacial Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China, Department of Oral Pathology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai 200011, P.R. China
Published online on: April 13, 2016 https://doi.org/10.3892/ol.2016.4433
Pages: 3761-3765

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Abstract

Cementoblastoma is a form of benign odontogenic tumor, with the preferred treatment consisting of tooth extraction and follow-up examinations, while in certain cases, follow‑up examinations without surgery are performed. Osteosarcoma of the jaw is a rare, malignant, mesenchymal tumor, associated with a high mortality rate and low incidence of metastasis. Cementoblastoma and osteosarcoma of the jaw are dissimilar in terms of their histological type and prognosis; however, there are a number of covert associations between them. The present study describes the case of a 20‑year‑old female with an unusual swelling in the left mandible that had been present for 2 years. The patient was initially clinically diagnosed with cementoblastoma; however, following pathological examination, a diagnosis of osteosarcoma was confirmed. A total mandibulectomy was performed on the left mandible, with a fibular osteomyocutaneous flap used for reconstruction. At the 6‑month post‑operative examination, the patient demonstrated normal occlusion and oral commissure, and no recurrence or metastasis was observed over 2 years of follow-up.

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