The pneumocephalus, as discovered after the MRI, was caused by an osteoma
, or a benign bone tumor that formed in the patient's sinuses and was eroding through the base of his skull.
These reports suggested that the eccentric area could be an osteoid osteoma
or a NOF.
Based on the horse's medical history, physical evaluation, and radiographic findings, the tentative diagnosis was a benign mandibular neoplasia as an ossifying fibroma, while osteoma
and fibrous dysplasia were considered as the differential diagnoses.
Some secondary reasons have been reported: herpes zoster, temporomandibular joint dysfunction, nasopharyngeal carcinoma, petrous bone osteoma
, and neuroborreliosis (5,6).
Neoplastic differential diagnoses for this case included squamous cell carcinoma, nasal or sinus carcinoma/adenocarcinoma, lymphosarcoma, chondroma, fibrosarcoma, osteoma
, and osteosarcoma, which have all been reported to affect the tissues of the rostral skull.
offer a detailed discussion of their use of ranibizumab to treat secondary choroidal neovascularization in a rare case of choroidal osteoma
MRI is an additional useful modality that can help distinguish fibrous dysplasia from meningioma, osteoma
or mucocele and define the extent of soft tissue involvement, particularly if central nervous system structures are impinged on.
We present an exceedingly rare localization of osteoma
within the cavity of a concha bullosa of the middle turbinate in a 38-year-old woman with frontal headaches and right-sided facial pain.
7-cm frontal sinus, benign osteoblastic lesion subsequently diagnosed as a cranio-facial osteoma
with osteoid osteoma
-like nidus on excision.
(OO) is the most common benign osteogenic bone tumor that predominantly affects young adults.
consist of dense, compact bone with a few marrow spaces, while cancellous osteoma
is characterized by bony trabeculae and a fibrofatty marrow enclosing osteoblasts which resembles mature bone.
is the most common form, and should be considered whenever a scoliosis is of new onset or advances quickly.