Case report of epithelioid osteoblastoma of the mandible: findings on PET/CT and review of the literature

Publication date: Available online 31 December 2018

Source: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology

Author(s): Akram Al-Ibraheem, Basel Yacoub, Andrew Barakat, Mohamad Yasser Dergham, Gilbert Maroun, Hussam Haddad, Alaa Saleh, Nabil Khoury, Mukbil Hourani, Mohamad B. Haidar

Abstract

Epithelioid osteoblastoma is a clinically aggressive subtype of osteoblastoma that favors the mandible and maxilla. Its histological features lie on a spectrum between conventional osteoblastoma and low grade osteosarcoma, thus making it difficult at times to confirm the diagnosis. It is known to have a high risk of recurrence after surgical resection but it is a benign entity and lacks the propensity to metastasize. To our knowledge, there is no published literature on findings of epithelioid osteoblastoma on positron emission tomography/computed tomography (PET/CT). We report a case of a 25-year-old male patient presenting with epithelioid osteoblastoma of the mandible. The lesion exhibited significantly increased FDG uptake on PET/CT with an SUVmax value of 5.5. PET/CT is not specific in differentiating between malignant and benign bone lesions, but may be necessary to rule out distant lesions when a confirmed diagnosis of epithelioid osteoblastoma cannot be obtained by histological examination.

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