Aneurysmal bone cyst of the temporal bone

Secondary Aneurysmal Bone Cyst in a Craniofacial Fibrous Dysplasia: Case Report

Aneurysmal bone cyst (ABC) is a rare non-neoplastic bone lesion that involves mostly the long bones and vertebrae and may occur very rarely in the craniofacial bones. ABCs may occur as secondary bony pathologies in association with various benign and malignant bone tumors and with fibrous dysplasia (FD). FD is a common non-neoplastic bony pathology mostly affecting craniofacial bones. Secondary ABC occurring in craniofacial FD is extremely rare, with only approximately 20 cases reported in the literature to date. Here, we report on a case of secondary ABC in a 25-year-old woman who has had a craniofacial deformity for over 10 years and who presented to us with a rapidly growing painful pulsatile mass in the right frontal region that began over 2 months prior to admission. On thorough examination of computed tomography and magnetic resonance imaging brain scans taken at two-month interval, an aggressive, rapidly enlarging ABC, arising from the right frontal FD, was diagnosed. The patient underwent preoperative embolization followed by gross total resection of the ABC and cranioplasty. The 6-month follow up showed no recurrence of the ABC, nor was any progression of the FD noticed.

Aneurysmal Bone Cyst of the Temporal Bone Presenting with Headache and Partial Facial Palsy

Background Aneurysmal bone cysts (ABCs) are benign bony lesions that rarely affect the skull base. Very few cases of temporal bone ABCs have been reported. We describe the first case of a temporal bone ABC that was thought to be consistent with a meningioma based on preoperative magnetic resonance imaging (MRI) findings. Clinical Presentation An otherwise healthy 23-year-old woman presented with a pulsatile noise in her left ear and a 4-week history of throbbing headache with nausea. There was no associated emesis, visual or auditory changes, or other neurologic features. Neurologic examination revealed a left lower motor neuron facial paresis. Computed tomography and MRI studies demonstrated a large lesion in the left middle cranial fossa skull base with erosion of the petrous temporal bone. Based on the presence of a "dural tail" on preoperative contrast-enhanced T1-weighted imaging, the lesion was interpreted to likely be consistent with a meningioma. An orbitozygomatic approach was utilized for surgical excision. Histopathologic evaluation was consistent with an ABC. Conclusion Postoperatively the patient had improvement in the lower motor neuron facial paresis. It is important to consider ABC in the differential diagnosis of intracranial lesions accompanied by the dural tail sign on MRI.

Aneurysmal bone cyst of temporal bone

Aneurysmal bone cysts (ABC) are benign neoplasms frequently occurring in the long tubular bones. It is very rare in temporal bone. We report a case of ABC of the left temporal bone in an 8-year-old Asian boy who presented clinically with swelling over the left temporal region for 5 months. CT and MRI features were suggestive of ABC. Surgical resection was performed and on follow-up the patient was doing well. CT and MRI are the imaging modalities for proper evaluation of ABC, aiding to diagnosis and helpful in treatment planning.

Aneurysmal bone cyst of the orbit : a case report with literature review

Aneurysmal bone cyst (ABC) is benign vascular lesion destructing the cortical bone by the expansion of the vascular channel in the diploic space that usually involve long bone and spine. Orbital ABC is rare and the clinical symptoms deteriorate rapidly after initial slow-progression period for a few months. A 12-year-old female patient visited ophthalmologist due to proptosis and upward gaze limitation of the right eye, and orbital mass was noted in the upper part of right eye on orbital MRI. Five months later, exophthalmos was worsened rapidly with other features of ophthalmoplegia. Orbital mass was enlarged on MRI with intracranial extension. Surgery was done through frontal craniotomy and intracranial portion of the tumor was removed. Destructed orbital roof and mass in the orbit was also removed, and surrounding bone which was suspected to have lesion was resected as much as possible. Histopathological diagnosis was aneurysmal bone cyst. Postoperative course was satisfactory and the patient's eye symptoms improved. Authors report a rare case of orbital ABC with review of the literature. Exact diagnosis by imaging studies is important and it is recommended to perform surgical resection before rapid-progressing period and to resect the mass completely to prevent recurrence.

Aneurysmal frontal bone cyst in a child with history of acute lymphoblastic leukemia: a case of rare location and history

Authors present an 11-year-old female admitted with a 3-month history of painless forehead mass. The mass was located in the left frontal area and was pronounced on inspection and palpation. Neurologic examination revealed no abnormalities. The patient was diagnosed for acute lymphoblastic leukemia 5 years ago and had been treated. The patient was under observation by the pediatric oncology clinic with remission state since 3 years. Brain computed tomography and magnetic resonance imaging revealed a cystic bone lesion in the right frontal bone. A preoperative diagnosis of myeloproliferative disorder was made and it was surgically resected and cranioplasty with porous polyethylene sheets (Medpor, Porex Surgical Inc, GA) was performed in the same stage. Pathologic examination revealed an aneurysmal bone cyst. The patient recovered with complete resolution of symptoms. Although rare lesions, aneurysmal bone cysts must be considered in the differential diagnosis of calvarial mass lesions.

Aneurysmal bone cysts of the cranium in children

Aneurysmal bone cysts (ABCs) of the cranium in children are rare, with only 3 to 6% of cases occurring in this anatomical location. Consequently, not much is known about ABCs and the most effective modality of treatment. The authors present the cases of three patients with ABCs and discuss the origin, pathogenesis, clinical presentation, pathological features, and imaging characteristics of these lesions. Furthermore the authors review the literature to find out the current treatment options for these lesions.

[Aneurysmal bone cyst of the frontal bone]

BACKGROUND

Aneurysmal bone cyst (ABC) is a benign, expansive, osteolytic lesion that mainly occurs in young people, and involves the skull bones only exceptionally. The origin of ABC is controversial: secondary reactive bone lesion, or primary disease that represents an independent nosological entity. Blunt head trauma was suggested as a possible etiological factor.

CASE REPORT

A case of a 19-year-old man with primary ABC of the right frontal bone was reported. The lesion was totally excised through frontal craniotomy, and the skull bone defect primarily reconstructed with an acrilate cranioplasty. Five years after the surgery, the patient was without signs of local recurrence.

CONCLUSION

Clinical and neuroradiological presentation of the skull ABC was not specific. Pathohistology confirmed the diagnosis. Total excision was the treatment of choice.

Aneurysmal bone cyst of the temporal bone associated with reversible hemifacial paralysis

Aneurysmal bone cyst (ABC) is an uncommon lesion of the temporal bone (TB), with only 20 cases reported. Facial paralysis is a rare complication (2 cases); however, no cases have been reported with preoperative reversal of paralysis. We report a 60-year-old man with a history of remote head trauma, who presented with serious otitis media and right hemifacial paralysis, which resolved with nonsurgical therapeutic measures. Magnetic resonance imaging and computed tomography showed a destructive and expansile lesion of the TB. The lesion was surgically removed, and ABC was diagnosed histologically. The patient had an uneventful recovery and demonstrated no recurrence at 1 year of follow-up. This report presents an unusual presentation of ABC in the TB, with a review of the clinical, radiological, pathological, and therapeutic features of this entity.

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 orbit: a case of rare location and review of the literature

Aneurysmal bone cysts (ABCs) are benign fibrosseous lesions, very rarely occurring in the orbit. Seventeen cases of ABCs involving the orbit were reported in the literature. MRI pictures of a 7-year-old female patient with ABC involving the orbit are presented here. The clinical findings were left-sided painless proptosis, diplopia, papilledema and partial loss of the vision. MRI study showed a well-circumscribed mutliloculated expansile lesion of the orbital roof. We additionally make a review of the literature for these rare lesions.