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Periorbital osteosarcoma: an unusual case report and review of the clinical and histopathological features.

We will describe a case of a rapidly growing osteoma of the orbit in a young boy presenting with orbital cellulitis. The subsequent discussion elucidates the clinical and radiographic features of osteoma and attempts to clarify the confusing terminology surrounding the histopathology of the three main types of osteoma. Patients with osteoma of the skull should be referred for appropriate gastrointestinal studies to rule out the occurrence of Gardner's syndrome.