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Year : 2021  |  Volume : 4  |  Issue : 2  |  Page : 155-162

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

1 Department of Neurosurgery, Himalayan Institute of Medical Sciences, Dehradun, India
2 Department of Neurological Sciences, Christian Medical College, Vellore, India

Correspondence Address:
Krishna Prabhu
Department of Neurological Sciences, Christian Medical College and Hospital, Vellore 632004, Tamil Nadu.
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/isj.isj_29_20

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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.

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