Aneurysmal Bone Cyst Of Spine Research Articles

Surgical management of pediatric spinal aneurysmal bone cysts: patient series.

Aneurysmal bone cysts (ABCs) are rare, highly vascular osteolytic bone lesions that predominantly affect pediatric populations. This report evaluates the clinicopathological data of pediatric patients with spinal ABCs. The medical records for all patients at Children's Hospital Los Angeles with biopsy-proven ABCs of the spine between 1998 and 2018 were evaluated. Seventeen patients, 6 males and 11 females, were identified. The mean age at surgery was 10.4 years (range, 3.5-20 years). The most common presenting complaint was pain at the lesion site 16/17 (94%), followed by lower-extremity weakness 8/17 (47%). Resection and intralesional curettage were performed in all patients. Three (18%) of 17 patients underwent selective arterial embolization prior to resection. Spinal stability was compromised in 15 of 17 patients (88%), requiring instrumented fusion. Five (29%) of the 17 patients received additional therapy including radiation, calcitonin-methylprednisolone, or phenol. Four (23.5%) of 17 patients experienced a recurrence, and the mean time to recurrence was 15 months. The postoperative follow-up ranged from 6 to 108 months (median, 28 months). Reoperation occurred after an average of 35 months. At the recent follow-up, patients were free of disease. Gross-total resection by intralesional curettage with case-dependent instrumented spinal fusion for instability remains an effective strategy for managing pediatric spinal ABCs. Long-term follow-up is necessary to detect tumor recurrence.

Treatment of Spinal Aneurysmal Bone Cyst with Percutaneous Injection of Hydroxyapatite Osteoconductive Cement.

The aim of this study was to evaluate treatment efficacy of percutaneous injection of hydroxyapatite-osteoconductive-cement in patients with spinal aneurysmal bone cysts. The study was designed as a retrospective observational clinical study. We included patients who were diagnosed with of spinal aneurysmal bone cyst, at our institution between 2013 and 2020, and treated with percutaneous injection of osteoconductive cement: "Cerament"® (BONESUPPORT AB, Lund, Sweden). Typical clinical and radiological features of the ABCs treatment and follow-up were investigated. Our study included nine patients, two children and seven adults. Three different types of approaches were applied: (single pedicle approach in 3 patients; double pedicle approach in 2 patients; while in the remaining cases, a multiple access approach was used. VAS score decreased from 8.5 ± 0.5 before treatment to 4.1 ± 0.9 at 6-months-follow up. All of the patients reacted well to treatment, with none neurological complications, complete loss of pain and achieved osteosclerosis as radiological marker of treatment success. Treatment of symptomatic spinal ABC's with hydroxyapatite cement is effective to achieve complete pain reduction and sclerosis.

Intensity Modulated Radiotherapy For Recurrent Spine Aneurysmal Bone Cyst In Adolescence-Case Report And Review of Literature

Aneurysmal bone cysts are rarely diagnosed aggressive benign bone tumors that require CT and MRI imaging and strict histopathological analysis. This clinically and histologically benign tumor is mainly diagnosed in children and adolescents in the long bones of the limbs, but in 12%-30% it is localized in the spine. Since the value of external beam radiotherapy (EBRT) for aneurysmal bone cyst (ABC) has not been well defined, we present our observations and treatment outcome after the realization of intensity modulated radiotherapy (IMRT) up to total dose 30 Gy for recurrent spine aneurysmal bone cyst in adolescent age. In this article, for the first time in the world medical literature, an MRI imaging finding after performed IMRT in recurrent ABC is presented. Our observations lead to the conclusion, that radiation therapy is an effective treatment method for relapsed or inoperable disease, achieving not only a symptomatic pain-relieving effect, but also a significant tumor reduction and restoration of the bone structure.

Surgical Management and Denosumab for Aneurysmal Bone Cysts of the Spine in an Australian Tertiary Paediatric Centre.

Aneurysmal bone cysts (ABC) are rare osteolytic, benign but often locally aggressive tumours of the long bones or vertebrae. For spinal ABC, surgical management, embolisation or sclerotherapy alone often carry high morbidity and/or high recurrence rates. Interruption of receptor activator of nuclear factor-kappa B ligand (RANKL) signalling holds promise as an effective therapeutic strategy for these tumours. We aimed to review the approach to surgical management and evaluate the efficacy and safety of denosumab for ABC of the spine in children. Retrospective review of 7 patients treated with denosumab using a standardised protocol for ABC of the spine in a tertiary paediatric centre. Surgical intervention was only conducted if there was spinal instability or significant neurological impairment. Denosumab 70mg/m2 was given 4-weekly for at least 6months, followed by 2 doses of zoledronate 0.025mg/kg, aiming to prevent rebound hypercalcaemia. All patients achieved stability of the spine and resolution of neurological impairment, if present. Six patients achieved metabolic remission and have ceased denosumab without recurrence to date; the other showed clinical and radiological improvement without complete metabolic remission. Three patients developed symptomatic hypercalcaemia 5-7months after cessation of denosumab, requiring additional bisphosphonate treatment. We present our algorithm for the surgical and medical management of paediatric spinal ABC. Denosumab produced a radiological and metabolic response in all patients, with complete remission in most. Follow-up time was not long enough to evaluate the endurance of response after cessation in some patients. Incidence of rebound hypercalcaemia in this paediatric cohort was high, prompting a change to our protocol.

Thoracic spine aneurysmal bone cyst causing paraplegia in a child: A case report

A primary aneurysmal bone cyst (ABC) of the spine is a benign lesion with an aggressive nature that can lead to bone destruction and the potential of recurrence after surgical resection. This report focuses on a rare case of the primary ABC in the proximal thoracic spine that is associated with paraplegia in a 7-year-old patient. Nonetheless, the previous research has confirmed that the best therapy for thoracic lesions is challenging and the paucity of evidence-based practice remains an impediment to addressing the issue. The main attribute that leads to these difficulties is the position of the lesions that occur close to the spine and the documented relationship to deformity. Surgical resection decompression can be used alone or in combination with fixation, curettage, selective arterial embolization, and radiotherapy. This report aimed to discuss the clinical, radiological, and therapeutic features of the primary spinal ABC and stress the need for complete surgical excision and decompression if complete spinal cord injury is present. We report this rare case, which was treated surgically with excellent neurological recovery and no recurrence of the ABC at 7 months of follow-up.

Autologous mesenchymal stem cells in the treatment of spinal aneurysmal bone cyst

Autologous mesenchymal stem cells in the treatment of spinal aneurysmal bone cyst

Spinal Aneurysmal Bone Cysts: Surgical Options and Clinical Outcome

Spinal Aneurysmal Bone Cysts: Surgical Options and Clinical Outcome

Autologous mesenchymal stem cells in the treatment of spinal aneurysmal bone cyst

PurposeWe retrospectively analyzed a cohort of patients treated at our Centre with bone marrow concentrated (BMC) injection for aneurysmal bone cyst (ABC) of the spine, in order to propose this treatment as a valid alternative for the management of ABCs. MethodsFourteen patients (6 male, 8 female) were treated between June 2014 to December 2019 with BMC injection for ABC of the spine. The mean age was 15.5 years. The mean follow up was 37.4 months (range 12–60 months). The dimension of the cyst and the degree of ossification were measured by Computed Tomography (CT) scans before the treatment and during follow-up visits. ResultsSix patients received a single dose of BMC, five patients received two doses and in three patients three doses of BMC were administered. The mean ossification of the cyst (expressed in Hounsfield units) increased statistically from 43.48 ± 2.36 HU to 161.71 ± 23.48 HU during follow-up time and the ossification was associated to an improvement of the clinical outcomes. The mean ossification over time was significantly higher in patients treated with a single injection compared to patients treated with multiple injections. No significant difference in ossification was found between cervical and non-cervical localization of the cyst. Moreover, the initial size of the cyst was not statistically associated with the degree of ossification during follow-up ConclusionsResults of this paper reinforce our previous evidence on the use of BMC as a valid alternative for spinal ABC management when SAE treatment is contraindicated or ineffective.

Spinal cord compression with acute para-paresis due to thoracic aneurysmal bone cyst (ABC): a case report and review of the literature

Aneurysmal bone cysts (ABCs) are benign, highly vascular osseous lesions characterized by cystic, blood-filled spaces surrounded by thin perimeters of expanded bone. Children and young adults are most often affected by spinal ABCs; more than 75% of patients are younger than 20 years old at the time of presentation. Although ABCs have been documented in all areas of the axial and appendicular skeleton, ABCs of the spine present unique challenges due to the risk of vertebral destabilization, pathological fracture, and vertebral body (VB) collapse with neurological compromise. We describe here a case of a 12-year-old child who presented with cervical pain and gait disturbances starting a few weeks prior to his admission with acute paraparesis at the time of admission. Subsequently he was found to have a Thoracic ABC involving T1-T3.This was accompanied by T2 vertebral body collapse and spinal cord compression. He was investigated and treated promptly by resection of the aneurysmal bone cyst with posterior Cervical-thoracic instrumentation. There was full post-operative neurological resolution.

Aneurysmal bone cysts in the spine, causing neurological compromise: safety and clinical efficacy of sclerotherapy utilizing sodium Tetradecyl sulfate foam.

To assess the clinical efficacy, technical feasibility, and safety profile of percutaneous sclerotherapy utilizing sodium tetradecyl-sulfate foam (STS) as a first-line treatment strategy for aggressive spinal aneurysmal bone cysts (sABCs) presenting with neurological compromise. Between July 2013 and September 2019, eight consecutive patients (5 males; 3 females; mean age 22±17, range 7-52) underwent fluoroscopic/CT-guided intraosseous sclerotherapy for sABCs. Pain and/or neurological compromise was the primary indications. Procedural data, complications, imaging, and clinical results were analyzed. Technical success was achieved in all cases. Mean procedure time was 25±15min (range 6-167); 1 to 5 repeat treatment cycles (mean 3.7±1.2) utilizing a mean 2.6mls±1.3 (range 1-6) of agitated 3% STS, with a DLP mean dose of 158±91mGy*cm (range 62-331) per procedure. One reported a minor complication (pain), but no significant complications. Two patients had persistent neurological deficit due to cord compression despite successful sclerotherapy, requiring surgical resection (and were thereby excluded from the final outcome analysis). The remaining six patients demonstrated a significant reduction in tumor volume (p = 0.028), pain (p = 0.027), and SINS (spinal instability neoplastic score) (p = 0.027) at up to 5years of follow-up (mean 20 ± 16.7, range 7-51months). Percutaneous sclerotherapy with STS is a minimally invasive, technically feasible, safe, and effective first-line treatment for primary sABCs causing pain and neurological compromise, alleviating the need for extensive surgery. It is most effective with three or more treatment cycles, in patients with higher SINS, pain scores, or tumor volumes at the initial presentation.

Clinical and surgical outcomes of enneking stage III aneurysmal bone cysts of the spine

Objective: To study the clinicoradiological characteristics and surgical outcomes in patients with aggressive aneurysmal bone cyst (ABC) of spine. Materials and Methods: In this retrospective study, data was collected from patients with aggressive ABC of spine managed between January 2007 and December 2016. Clinical findings, radiological, and histological characteristics were studied. Follow-up was done either in the outpatient clinic or through a telephonic interview. Results: Seven patients (mean age, 15.6 years, range, 6–23 years) diagnosed with Enneking stage III aneurysmal bone cyst of the spine were included in the study. Local pain with restriction of movement was the most common presenting complaint (100%). Four patients presented with myelopathy. Thoracic spine was the most common site of involvement (43%). Of the patients, 71% had involvement of all three columns. All patients underwent surgical management; gross total resection in four patients (57%) and subtotal in three patients (43%). Of the seven patients, six required instrumented fusion. None of the patients developed any perioperative complication except for one patient who developed transient hip flexion worsening. Two patients received conformal radiation therapy (RT) postoperatively. The follow-up ranged from 40 months to 108 months (mean follow-up was 4.5 years). There were no recurrences. At last follow-up, all patients were alive and had significant improvement. Conclusions: ABC of the spine is found predominantly in the pediatric population. Intralesional en bloc resection with instrumented stabilization provides effective and fast relief from pain, early mobility, good surgical, and long-term outcomes. Conformal RT following a planned subtotal excision prevents the progression of the disease.

A Case of C 3 Aneurysmal Bone Cyst Managed by Staged Surgery

Aneurysmal bone cysts are often mistaken as malignant tumors such as lesions or another benign bony lesion because of their proliferative component. Treatment of spinal aneurysmal bone cyst is challenging because of its proximity to the spinal cord, unique pathology, and complex growth characteristics. The treatment options are curettage and bone grafting, irradiation, embolization, intralesional injection of calcitonin, and steroid. We present a case of cervical aneurysmal bone cysts operated in a staged procedure: arterial embolization followed by surgical resection and stabilization. Keywords: Aneurysmal bone cyst, Arterial embolization, Bone grafting

Aneurysmal Bone cyst of Lumbar Spine: Case report and Review of Literature

Aneurysmal bone cysts (ABCs) are benign bone lesions arising mostly in the pediatric population that can cause local pain, swelling, and pathologic fracture. It is occasionally an aggressive benign lesion whose treatment of choice is complete resection, even though the risk of profuse intraoperative bleeding exists. We here report a case of spinal aneurysmal bone cyst treated by surgery and adjuvant radiotherapy.

Imaging features of Vertebral Aneurysmal Bone Cyst and the clinical value of interventional embolization.

The current study aimed to investigate the imaging manifestations of vertebral aneurysmal bone cyst (ABC), and examine the clinical value of interventional embolization. Imaging examinations of 5 patients with pathologically confirmed spinal ABC were analysed and arterial angiography and embolization were performed prior to surgery. The cases in this cohort exhibited different degrees of intrusion into the vertebral arch and spinous and transverse processes. Lesions that protruded into the spinal canal resulted in compression of the thecal sac and spinal cord. Enlargement of arteries was detected by digital subtraction angiography and decreased significantly following embolization. Blood loss during surgery was also significantly reduced. Preoperative embolization of ABC reduces bleeding and allows for easy access to tissue, which is of great clinical value.

An aneurysmal bone cyst ruptured and compressed the spinal cord: a case report

Spinal aneurysmal bone cyst (ABC) is a rare benign bone lesion with various prognosis. Common clinical symptoms of spinal ABCs include local pain, swelling. But we presented a case of a teenager girl who exhibited symptoms of acute thoracic cord compression after a slight trauma and was then diagnosed with ABC in her thoracic spine. A unique aspect is that this patient did not have symptoms before she fell down on her hip, and had an acute worsening of her neurological deficits. In the vast majority of cases, for a teenager, the trauma on the spine is tiny after falling down on the hips. That is the reason we initially felt confused before she had an urgent CT scan. In order to achieve early decompression of the thoracic cord and stabilization of the local spine around T4, we proceeded with urgent lesion resection and pedicle screws fixation from T2 to T5 to remove the liquid containing cyst and achieve spinal stability. Postoperative pathology indicated the lesion was an ABC. The patient gained good neurological recovery without any adverse effect in the final follow-up. We believe spinal ABC of teenagers can have no symptoms until a slight trauma leading to acute neurological deficits. Careful preparing for emergency surgery, prompt resection of the lesion as well as spinal stability reconstruction can promote good recovery and minimal adverse effect.

Primary Aneurysmal Bone Cyst of the Spine in Children: Updated Outcomes of a Modern Surgical Technique.

Aneurysmal bone cysts (ABC) are benign but locally aggressive lesions. Treating children with spinal ABC poses risks due to the proximity of the lesion to the spinal cord and the need to preserve spinal stability after surgery. This study reports the updated outcomes of a uniform aggressive initial surgical technique for the treatment of spinal ABC in children. Twenty-nine cases of spinal ABC were collected from a tertiary pediatric tumor center over a 24-year period (January 1990-September 2014). The study patients were divided into 2 groups based on the performed procedure: a traditional approach consisting of curettage and bone grafting (group 1) and a 4-step approach consisting of intralesional curettage, high-speed bur, electrocautery, and bone grafting (group 2). The study population was composed of 12 males and 17 females with a mean age of 12.2 years at the time of diagnosis and a mean postoperative follow-up of 4.03 years. Twenty-one patients underwent the 4-step approach, while 8 patients were treated with the traditional technique. The recurrence rate was 50% (4/8 patients) with the traditional technique (group 1) and 19% (4/21) in the 4-step technique (group 2) (P = .164). Regardless of the technique used, the presence of sensory symptoms at the time of presentation was a statistically significant factor for recurrence (P = .016). We suggest that addressing spinal ABC in pediatric patients with a 4-step approach is a safe technique that may decrease long-term recurrence and reoperation rates compared to the traditional technique of intralesional curettage and bone grafting. 4.

Validating the management paradigm for pediatric spinal aneurysmal bone cysts to optimize long-term outcomes: an institutional experience.

The optimal clinical management and outcomes of rare pediatric spinal aneurysmal bone cysts (spABC) is largely anecdotal. Current practice is based on bigger adult series, although given the disparities in spine growth of adults versus children, what impact this difference may have on long-term outcomes has yet to be substantiated. Correspondingly, the aim of this study was to describe the clinical course of all pediatric spABC cases managed at our institution to better understand this. A retrospective cohort study of all pediatric spABC cases presenting to our institution between 1993 and 2017 was performed using a predetermined set of selection criteria. Primary outcomes of interest were treatment modalities and their outcomes, recurrence status, and functional status. A total of 24 pediatric spABC cases satisfied all criteria. Median age of diagnosis was 13.5years, with 15 females and 9 males. Radicular pain was the presenting symptom in 21 (88%) cases. Diagnostic biopsy was pursued in 9 (38%) cases, pre-operative embolization in 8 (33%) cases, surgical intervention in 23 (96%) cases, and sclerotherapy in 2 (8%) cases. In terms of surgery, there were no intraoperative complications, and gross total resection (GTR) was achieved in 14 of the 23 (61%) cases. Overall, there were 5 (21%) cases which experienced recurrence by a median time of 8months after initial surgery, all of which had initial subtotal resection. Median follow-up was 5years, by which all patients demonstrated excellent functional status. There are a number of feasible therapeutic modalities and combinations that can be utilized to maximize control of pediatric spABCs and optimize long-term function similar to that of adults, irrespective of developing versus developed spines. The incidence of recurrence is not negligible, and therefore, rigorous long-term surveillance is highly encouraged, particularly within the first post-operative year following mono-modal non-GTR treatment.

Aneurysmal Bone Cyst of the Cervical Spine

Aneurysmal bone cyst (ABC) is a non-neoplastic locally destructive primary bone lesion mostly occurring within the first two decades of life with female predominance. Cervical spine ABCs are a very rare clinical entity with particularly demanding surgical resection limited by the involvement of nearby neurovascular structures and a risk for cervical spine instability. We present a case of a 17-year-old patient with a symptomatic ABC of the cervical spine who underwent surgical removal of the osseous lesion with good postoperative outcome. There are different therapeutic strategies for ABC management, but complete surgical removal of the cyst remains one of the most important predictors of favorable outcome, although it can be often limited, especially in the cervical region. Previously described lesions have a very high recurrence rate and therefore different additional methods, such as radiotherapy, embolization and sclerosation have been used in addition to surgical resection. Further studies are necessary for development of evidence-based treatment regimens for cervical spine ABCs in pediatric population.

Aneurysmal Bone Cysts of the Spine in Children: A Review of 18 Cases.

Study Design:Retrospective study.Objective:The aim of this study was to evaluate the clinical presentation, treatments, outcome, complications, and recurrence rate in the surgical and nonsurgical management of spinal aneurysmal bone cyst (ABC) in a series of 18 pediatric patients.Methods:Between 1988 and 2014, we evaluated 18 pediatric patients diagnosed with ABC confirmed by pathology studies. We analyzed clinical and radiological features, non-surgical and surgical treatment, outcome, and complications.Results:The series included 12 male and 6 female patients with a mean age of 10 years and 4 months, with a mean follow-up of 5 years. Location of the ABC was lumbar in 8, cervical in 7, thoracic in 2, and sacral in 1 case. Axial pain was the most common symptom followed by radicular involvement. Surgery was performed in the presence of spine instability or neurological involvement (tumor resection) and in the remaining, nonsurgical treatment (percutaneous intralesional injection of methylprednisolone and calcitonin). Recurrence was observed in 4 patients requiring reintervention. There were no procedure-related complications.Conclusion:In patients without neurological involvement or spinal instability, nonsurgical treatment is the treatment of choice. Total or subtotal removal combined with posterior instrumented spinal fusion is recommended in cases with a neurological deficit. Both procedures have shown good long-term results.

Spinal Aneurysmal Bone Cysts (ABCs): Optimal Management.

AimTo review the published literature on the treatment of aneurysmal bone cysts (ABCs).MethodA systematic review of the English literature to April 2019 for all articles, with a minimum of three patients and 2-year follow-up, reporting on the treatment of spinal ABCs. The various treatment options were compared for the rates of recurrence, complications and mortality.ResultsTwenty-one articles and 272 patients (mean age 16.9 years, range 3–67) were included in this review. The overall recurrence rate for ABCs following all treatments is 12.8%. This is highest in those lesions described as being treated with isolated surgiflo injection into the lesion (100%), decompression/laminectomy (42.3%), partial excision/resection (35.7%) and curettage alone (25.0%). Radiotherapy alone or in conjunction with operative intervention offers excellent cure rates. Adjuncts to operative intervention, including cryotherapy or phenol reduce the recurrence rates, whereas embolization does not. The most common complications are persistent neurological deficits, spinal deformity, and continued pain. The overall mortality rates are low (1.5%). The reoperation rates are higher in surgical than non-surgical treatments and most are performed for progressive deformity.DiscussionABCs are highly radiosensitive. However, with the unknown longer-term risk of radiotherapy, surgical treatments, ideally with complete resection, and the use of adjunctive therapies such as cryotherapy or phenol, offer the best chance of cure. SAE is a useful adjunct to reduce intraoperative bleeding, but this study suggests that it only modestly improves recurrence rates. Newer techniques including bisphosphonate and doxycycline administration offer potential benefits, but their efficacy requires further investigation.