A case repore of aneurysmal bone cyst of the mandibular condyle.
- Author:
Jae Hee KO
1
;
Sam Sun LEE
;
Soon Chul CHOI
;
Tae Won PARK
;
Dong Soo YOU
Author Information
1. Department of Oral and Maxillofacial radiology, College of dentistry, Seoul National University, Korea.
- Publication Type:Case Report
- MeSH:
Adult;
Aneurysm*;
Bone Cysts*;
Erythrocytes;
Female;
Fibroblasts;
Fingers;
Giant Cells;
Histiocytes;
Humans;
Magnetic Resonance Imaging;
Mandibular Condyle*;
Osteogenesis;
Pigmentation;
Radioactivity;
Radionuclide Imaging;
Spine
- From:Journal of Korean Academy of Oral and Maxillofacial Radiology
1997;27(1):231-242
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The aneurysmal bone cyst is a nonmalignat reactive bone lesion. Developing rarely in the craniofacial region, and more commonly affecting the long bones and the spine, the lesion has variable etiopathogenic characteristics. The author s diagnosed a 33-year-old female as aneurysmal bone cyst after undergoning clinical, radiological and histological exami nations. The characteristics were as followed: 1. The patient complained of pain and swelling of the right preauricular area. 2. The conventional radiograms showed a relatively well difined radiolucent lesion with partially scallping margin. The cortical bone of the right condyle was thinned and expanded by the lesion. 3. Bone scintigraphy with (99m)Tc demonstrated ring-like or doughnut-pattern accumulation of radioactivity. 4. On T1-weighted imaging of MRI, the lesion on the right condyle had middle signal intensity. T2-weighted MRI demonstr ated multiple high signal intensities seperated by septa which had low signal intensity. Finger in balloon appearance wa s seen. 5. Histologically, the lesion was composed of large sinusoidal blood spaces lined by fibroblasts and histiocytes. Its fibrous stroma consisted of fibroblastic element, multinucleated giant cells, extravasated erythrocytes and focal hemosid erin pigmentation. New bone formation was also observed aroud larger sinusoidal spaces.
