A large osteoid osteoma of the mandibular condyle causing conductive hearing loss: a case report and review of literature

Abstract

Osteoid osteomas are benign skeletal neoplasms that are commonly encountered in the bones of the lower extremities, but are exceedingly rare in jaw bones with a prevalence of less than 1%. This unique clinical entity is usually seen in younger individuals, with nocturnal pain and swelling as its characteristic clinical manifestations. The size of the lesion is rarely found to be more than 2 cm. We hereby report a rare case of osteoid osteoma originating from the neck of the mandibular condyle that grew to large enough proportions to result in conductive hearing loss in addition to pain, swelling and restricted mouth opening. In addition, an effort has been made to review all the documented cases of osteoid osteomas of the jaws that have been published in the literature thus far.

Osteoid Osteoma of the Basilar Border of the Mandible: A Diagnostic Dilemma

“…Giant cell granuloma is distinguished based on the presence of uneven distribution of multinucleated giant cells in the surrounding stroma. This finding was not present in this case [8,14]. Concerning osteoma, benign bone tumor is usually asymptomatic or not very painful.…”

“…Indeed, the nidus of osteoid osteoma contains high concentration of prostaglandin E2 and prostacyclin, which explains the pain and the good response to aspirin and other NSAIDs. Other authors believe that the rich vascularity brings about innervations of the free nerve endings or direct irritation of the nerve fibers, leading to pain and tenderness [ 8 , 9 ].…”

“…Magnetic resonance imaging (MRI), which has the advantage of being non-irradiating, is indicated when the medullary bone is affected. It is also indicated to guide diagnosis when other imaging techniques are not conclusive [ 8 , 10 ]. In the present case, osteoid osteoma was diagnosed using CT scans, which not only revealed the exact dimensions and extent of the lesion, but also provided better surgical planning.…”