osteoma

Evidence of the subperiosteal origin of osteoid osteomas in tubular bones: Analysis by CT and MR imaging.

Bone-forming tumors such as osteomas are uncommon in domestic animals and are extremely rare in free-living and captive birds.

These lesions also show partial or extensive calcification, with some depicting features similar to osteoid osteomas of a central nidus of sclerotic bone surrounded by a radiolucent halo.

Osteoid osteomas account for approximately 10% of all benign bone tumors, usually occur between 5 and 25 years of age, and are found predominantly in males (2:1-3:1 male to female ratio) [4].

Benign bony outgrowths of the compact or the cancellous bones result in formation of an osteoma. Only those arising from periosteum are labelled as peripheral osteomas and have varied etiology like being a true neoplasm, post traumatic entity, post infective or as an entity arising due to muscle traction.

The long cases involved mainly vertebroplasty, radiofrequency ablation and cryoablation of various tumours (hepatic, renal, pulmonary, prostatic, paraveterbral), laser ablation of osteoid osteomas, and pulmonary, bone and intervertebral disc biopsies.

About one-half of patients develop osteomas involving the membranous bones of the face and head.

Osteomas are benign, generally slow-growing, bone-forming tumors limited almost exclusively to craniofacial and jaw bones.

Some authors have suggested that osteoid osteomas in the hand are not candidates for RFA due to the risk of complications because of the close proximity to skin and nerves.

Osteomas are the most common tumors of the temporal bone [1].

COX-1 and COX-2 expression in osteoid osteomas. J Orthop Res.