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Skeletal Radiol. 2008 Nov;37(11):1011-7. doi: 10.1007/s00256-008-0526-4. Epub 2008 Jul 19.

Radiofrequency ablation of chondroblastoma: procedure technique, clinical and MR imaging follow up of four cases.

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1
Department of Radiology, The Royal Orthopaedic Hospital Foundation Trust, Bristol Road South, Northfield, Birmingham, B31 2AP, UK.

Abstract

PURPOSE:

The aim of this study is to describe the procedure technique, clinical and imaging outcomes of patients treated with radiofrequency ablation for chondroblastoma.

MATERIALS AND METHODS:

Four patients (female/male, 3:1; mean age, 13 years; age range; 9-16 years) underwent the procedure. All had pre-operative magnetic resonance imaging (MRI) and symptomatic, biopsy-proven chondroblastomas (two proximal femur, two proximal tibia). The lesion size ranged from 1.5 to 2.5 cm in maximal dimension (mean size, 1.8 cm). Bone access was gained with a Bonopty biopsy needle system (mean number of radiofrequency needle placements, 5; mean ablation time, 31 min).

RESULTS:

Clinical and MRI follow-up was available in all cases (mean, 12.25 months; range, 5-18 months). All patients reported resolution of symptoms at 2-6 weeks post ablation. At their most recent clinical follow-up, three patients remained completely asymptomatic with full return to normal activities and one patient had minor local discomfort (different pain pattern) that was not limiting activity. All four patients' follow-up MRI studies demonstrated resolution of the oedema pattern around the lesion and temporal evolution of the internal signal characteristics with fatty replacement.

CONCLUSION:

Radiofrequency ablation for chondroblastoma provides an alternative to surgical curettage, and we have demonstrated both a clinical improvement in symptoms and the follow-up MRI appearances.

PMID:
18641981
DOI:
10.1007/s00256-008-0526-4
[Indexed for MEDLINE]
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