Origin and Treatment of Osteomas of the Paranasal Sinuses

Successful resection of an osteoma in a great horned owl ( Bubo virginianus ) with subsequent lack of regional feather regrowth

“…As these tumours appear to occur sporadically, it remains unclear why they would have a propensity for affecting the extremities in certain species. Trauma has been suggested as a potential underlying cause of osteomas in humans 26–28. No signs of trauma to the left ulna, aside from feather damage, were noted in this individual.…”

“…Trauma has been suggested as a potential underlying cause of osteomas in humans. [26][27][28] No signs of trauma to the left ulna, aside from feather damage, were noted in this individual. However, as the substantial size of this slow-growing tumour indicates a chronic process, it is possible that the bird underwent a traumatic injury in the left ulna that subsequently healed prior to presentation.…”

Osteomas of the paranasal sinuses

“…The Royal National Throat, Nose and Ear Hospital, Gray's Inn Road, London WC1X 8DA. Mehta andGrewal (1963) Childrey(1939) Hallberg andBegley (1950) Handousa(1952) Samy and Mostafa (1971) In our series (1979) Males 36 10 35 21 12 14 Females 14 5 16 11 9 9 Ratio 2-6: 1 2 0 : 1 2-2: 1 1-9: 1 1-3: 1 1-5 : 1…”

Bilateral osteomas and exostoses of the internal auditory canal

“…These include trauma, infection, inflammation, low-grade irritation from adjacent blood vessels, hormonal or genetic factors, or contact by sites of distinct embryological origins [8,[18][19][20]. The female to male ratio found in our literature review was 4:1, suggestive of hormonal influences on underlying bone [8].…”