Aneurysmal bone cyst of the temporal bone

Aneurysmal bone cyst (ABC) of the temporal bone is rare. The nature of the underlying disorder that converted into the ABC might, however, be difficult to ascertain on imaging as well as on histopathology. The unusual CT and MRI findings in a case of ABC of the temporal bone are presented. This had transdural intracerebral spread with a large component of solid enhancing matrix but no peripheral calcific rim. The patient was an adult of 45 years with a history of headache for more than 1 year.     

Aneurysmal bone cyst of the temporal bone

Aneurysmal bone cysts are benign fibrosseous lesions of the bone that are rarely detected in the temporal bone. Seventeen cases of aneurysmal bone cysts with histological confirmation involving the temporal bone were reported in the literature. We report a case of left temporal aneurysmal bone cyst in a 52-year-old male with the clinical findings of periauricular painful swelling, decreased hearing, and facial paralysis. A magnetic resonance image of the patient showed a well-circumscribed multi-loculated expansile lesion of the left temporal bone during the first admission to the hospital. The lesion recurred 1 year after the subtotal resection with a more solid appearance. In addition, we review the literature for these rare lesions.     

Aneurysmal bone cyst of the ethmoid bone

Aneurysmal bone cysts is a benign, slow growing expansile lesion usually found in long bones or vertebrae. Only 5 cases of ABC of the ethmoid bone have been reported in the literature. Plain radiographs are not specific. CT and MRI are very useful to depict the extent of the lesion and demonstrate the presence of blood-fluid levels, which is a characteristic finding of ABC. We present one atypical case of ABC of the ethmoid bone in a 15-year-old female characterised by its extensive involvement and its rare location.     

Aneurysmal bone cyst of the temporal bone

Summary Aneurysmal bone cysts occurring within the calvarium are uncommon. The following case report describes the radiological and pathological findings of a temporal bone aneurysmal bone cyst with intra- and extracranial manifestations. The pertinent literature is reviewed.     

Aneurysmal bone cyst of the sacrum

A series of five cases of sacral aneurysmal bone cyst is presented. There were three females and two males, the youngest patient being 11 years old, the oldest 41 years old. All patients had pain of long duration with varying signs of nerve root compression. Three patients had micturitional problems. Four patients had a palpable mass which was tender. All had standard radiographs. Tomograms, computed tomography (CT) scans or MRI (magnetic resonance imaging) were obtained in some patients. In all patients a definite histologic diagnosis was established. Four lesions healed after resection (two cases) or curettage (two cases). One patient is considered to have a stable lesion which is not progressing.Supported in part by Speical Project Oncology, National Council for Research grant n^o 87.02810.44     

Aneurysmal bone cyst of the orbit

Aneurysmal bone cysts of the skull are rare, and orbital involvement of these cysts is even less frequent. We present CT, MR imaging, and histopathologic findings of an aneurysmal bone cyst of the orbit in a 13-year-old female adolescent. The tumor mainly involved the frontal bone. MR imaging findings of the aneurysmal bone cyst of the skull were highly suggestive of the diagnosis.     

Case report: Aneurysmal bone cyst of the ethmoid bone

Aneurysmal bone cysts (ABCs) are benign, slow growing expansile lesions usually found in long bones or vertebrae. Plain radiography reveals expansion of bone and cortical thinning. MRI may assist in diagnosis by virtue of its ability to demonstrate blood-fluid levels, which is a characteristic finding in these lesions. Very few cases of ABC of the paranasal sinuses have been reported in the literature. We present MRI findings of ABC of the ethmoid sinus in a 19-year-old male.     

Aneurysmal bone cyst and other nonneoplastic conditions

Aneurysmal bone cyst is a benign proliferative tumefaction of bone. Histologic similarities indicate a kinship among classic aneurysmal bone cysts, essentially solid proliferative lesions in bones; giant cell reparative granulomas of the jaws, at the base of the skull, and in the small bones of the hands and feet; skeletal lesions of hyperparathyroidism; and even pseudosarcomatous myositis ossificans, proliferative myositis, and proliferative fasciitis.     

Aneurysmal bone cyst of the temporal bone: MR findings.

MR findings in a case of aneurysmal bone cyst of the temporal bone are described. MR can suggest the diagnosis of aneurysmal bone cyst and also give ancillary information that is helpful for surgical treatment.     

髌骨动脉瘤样骨囊肿一例

患者男,34岁.无明显诱因出现右膝酸痛伴行走牵拉痛,症状逐渐加重1个月而就诊.体检:右髌骨前内侧压痛明显,未触及明显包块,局部无发红、破溃,皮温正常,膝关节活动时疼痛,浮髌试验(-),抽屉试验(-).常规实验事检查各项指标均正常.     

Aneurysmal bone cyst of the coronoid process of the mandible.

A rare case of an aneurysmal bone cyst (ABC) involving the right coronoid process of the mandible in a 12-year-old girl is presented. The characteristic features with fluid-fluid levels within the lesion observed on Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) was helpful in the preoperative diagnosis.