Mushroom Shaped Osteoma of the Temporal Bone – An Unusual Case Report

Introduction: Osteomas of the temporal bone are rarely encountered, especially extracanalicular ones in the mastoid region. Mushroom shaped osteomas of the temporal bone are even more rare with a handful of cases being reported in medical literature. We present a case of a mushroom shaped osteoma of the mastoid in a 16 year old female patient. Case Report: A 16 year old female presented to our OPD with a history of a slow growing swelling behind the right ear for the last eight years. Her only complaint was the aesthetic deformity caused by the swelling. Local examination revealed a bony hard swelling. The patient was posted for excision of the bony mass under general anaesthesia. Histopathological examination of the excised mass confirmed it to be an osteoma. Discussion: Osteomas of the mastoids are benign tumours which should be differentiated from exostosis of the external auditory canal. Surgical excision is usually the treatment of choice and in experienced hands, presents few problems. Conclusion: We present a case report of a mushroom shaped extracanalicular osteoma of the right temporal bone which is extremely rare as per available medical literature