Peripheral osteoma of the mandible: A study of 10 new cases and analysis of the literature

Solitary Periosteal Osteoma of the Mandible : A Case Report = ورم عظمي سمحاقي منفرد للفك السفلي : تقرير حالة

“…10 Kaplan et al reported an increased occurrence of periosteal osteomas between the ages of 15 and 75 years, with a mean age of 25 years. 5 Osteomas do not show any sex predilection; however, cases favouring the cancellous variant in females and the compact form in males have been reported. 6,10 The pathogenesis of periosteal osteomas is not well-understood.…”

“…4 The lesions rarely affect the jaws. 2,4 Sayan et al reported that 22.85% of periosteal osteomas occurred in the mandible as compared to 81.3% reported by Kaplan et al 5,8 Osteomas are classified as: compact/ivory, cancellous/spongy, or mixed on histopathological and clinical grounds. 9,10 Peripheral (periosteal) osteomas are infrequently encountered as solitary lesions.…”

“…9,10 Peripheral (periosteal) osteomas are infrequently encountered as solitary lesions. 5 The compact osteoma is comprised of dense, compact bone with some marrow space and osteons. The cancellous osteoma shows bony trabeculae and fibrofatty marrow.…”

“…3 Kaplan et al proposed three possible aetiologies for periosteal osteomas: developmental, neoplastic and reactive. 5 However, it is unlikely that periosteal osteomas, either located in the mandible or the sinuses, are developmental anomalies as, in most cases, they develop during adulthood. Furthermore, as the majority of cases of periosteal osteoma are slow growing, it is likely that they are non-neoplastic in origin.…”

“…Kaplan et al and others have reported that most periosteal osteomas of the mandible occur on the lower border or on the buccal aspect, and this site is more susceptible to trauma than the lingual aspect. 4,5,11 A combination of trauma and muscle traction may provide the best explanation of the pathogenesis of mandibular periosteal osteomas. It is suggested that osteomas are initiated following minor traumas which are unlikely to be remembered by the patient years later.…”