Definition and Types of Osteoma - Osteoma is a new piece of bone growing on another piece of bone, usually the skull. - It is a benign tumor. - When the tumor grows on other bone, it is known as homoplastic osteoma. - When it grows on other tissue, it is called heteroplastic osteoma. - Osteoma is the most common benign neoplasm of the nose and paranasal sinuses.

Causes and Theories - The cause of osteomas is uncertain. - Commonly accepted theories propose embryologic, traumatic, or infectious causes. - Osteomas are also found in Gardner's syndrome. - Larger craniofacial osteomas may cause facial pain, headache, and infection. - Obstructed nasofrontal ducts can lead to infection in craniofacial osteomas.

Symptoms and Presentation - Craniofacial osteoma often presents itself through ocular signs and symptoms, such as proptosis. - Facial pain and headache can be symptoms of larger craniofacial osteomas. - Infection can occur due to obstructed nasofrontal ducts. - Osteomas in the nose and paranasal sinuses can cause facial pain and infection. - Osteomas can lead to obstruction of nasofrontal ducts.

Medical Management - Management of a large frontoethmoid osteoma may involve sinus cranialization and cranial bone graft reconstruction. - Medical management may be required for symptomatic osteomas. - Surgical intervention is often necessary for craniofacial osteomas. - Osteomas can be managed with appropriate medical and surgical interventions. - Treatment options for osteomas include surgical removal and reconstruction.

Additional Resources - External links on eMedicine provide information about osteoid osteoma. - eMedicine also provides information about osteoma cutis. - Pathology images of osteoma can be found on Humapth #4724. - Osteoma is classified under ICD-10 as D16. - ICD-9-CM classification for osteoma is 213.0.