Osteoid Osteoma: Clinical Results with Thermocoagulation

Vanderschueren, Geert; Taminiau, A. H. M.; Obermann, Wim R.; Bloem, Johan L.

doi:10.1148/radiol.2241011135

Cited by 188 publications

(135 citation statements)

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“…Thus, a total of 121 thermocoagulation procedures was performed in our patient group of 97 patients. The clinical outcome, and definitions of diagnosis and outcome, have been previously reported [1]. Anatomical location is listed in Table 1.…”

Section: Patientsmentioning

confidence: 99%

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The healing pattern of osteoid osteomas on computed tomography and magnetic resonance imaging after thermocoagulation

et al. 2007

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Objective To compare the healing pattern of osteoid osteomas on computed tomography (CT) and magnetic resonance imaging (MRI) after successful and unsuccessful thermocoagulation. Materials and methods Eighty-six patients were examined by CT and 18 patients by dynamic gadolinium-enhanced MRI before and after thermocoagulation for osteoid osteoma. Thermocoagulation was successful in 73% (63/86) and unsuccessful in 27% (23/86) of patients followed by CT. Thermocoagulation was successful in 72% (13/18) of patients followed by MRI. After treatment, the healing of the nidus on CT was evaluated using different healing patterns (complete ossification, minimal nidus rest, decreased size, unchanged size or thermonecrosis). On MRI the presence of reactive changes (joint effusion, "oedema-like" changes of bone marrow and soft tissue oedema) and the delay time (between arterial and nidus enhancement) were assessed and compared before and after thermocoagulation. Results Complete ossification or a minimal nidus rest was observed on CT in 58% (16/28) of treatment successes (with > 12 months follow-up), but not in treatment failures. "Oedema-like" changes of bone marrow and/or soft tissue oedema were seen on MR in all patients before thermocoagulation and in all treatment failures. However, residual "oedema-like" changes of bone marrow were also found in 69% (9/13) of treatment successes. An increased delay time was observed in 62% (8/13) of treatment successes and in 1/5 of treatment failures. Conclusion Complete, or almost complete, ossification of the treated nidus on CT correlated with successful treatment. Absence of this ossification pattern, however, did not correlate with treatment failure. CT could not be used to identify the activity of the nidus following treatment. The value of MR parameters to assess residual activity of the nidus was limited in this study.

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Section: Patientsmentioning

confidence: 99%

“…Thermocoagulation is an effective and safe treatment for osteoid osteoma [1,2]. The typical clinical and imaging features of osteoid osteoma on plain radiographs, bone scintigraphy and computed tomography (CT) have been described in detail [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

The healing pattern of osteoid osteomas on computed tomography and magnetic resonance imaging after thermocoagulation

et al. 2007

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“…The thermal damage is also quantified by means of the survival rate (6). We are especially interested in the survival rate of a circle in the central plane = 0 with the origin as center and with a diameter of 2 cm.…”

Section: Resultsmentioning

confidence: 99%

“…Tumor sizes with larger volumetric dimensions (larger than 2-3 cm) are more difficult to treat using RFA [4]. Besides the extensive studies and applications for liver tumors, RFA has also been applied as cancer treatment modality in other organs such as kidney [5], bone [6], lungs [7], etc.…”

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confidence: 99%

Coupled electrical-thermal model for monopolar and bipolar radiofrequency liver tumor ablation

Soetaert

Crevecoeur

Dupré

2016

2016 International Symposium on Fundamentals of Electrical Engineering (ISFEE)

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Abstract-Radiofrequency ablation (RFA) is an alternative cancer treatment that applies radiofrequency electric fields to biological tissues. The subsequent electrical currents induce Joule heating and inflict local thermal damage to the biological tissue. Previous clinical studies demonstrate the possibilities and benefits of applying RFA for the treatment of liver tumors. Currently, most clinical studies focus on monopolar RFA, consisting of a single electrode and a grounding pad, and its therapeutical outcome. This study however focuses on a bipolar configuration where two needle electrodes are inserted at a certain potential difference. In order to assess the temperature elevations in biological tissues, we have developed a computational model. A mathematical model based on Laplace's equation (with appropriate boundary conditions) is used to model the electromagnetic phenomena and is coupled to the bioheat transfer equation. This study compares a monopolar RFA with a bipolar configuration. We investigate the spatio-temporal temperature variations using detailed numerical three-dimensional finite element simulations in biological tissues, corresponding to liver tissue. Results show that the ablated region in between the two needles of the bipolar configuration can be enlarged compared to a monopolar RFA configuration.

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“…The treatment for osteoid osteoma is surgical; nidus ablation must be complete to avoid the lesion recidivation (9-11) . Open resection (9-11) or CT-guided percutaneous procedures may be utilized in the lesion ablation (12)(13)(14) . In the present case, because of the anterior localization of the lesion in the vertebral body, the anterior retroperitoneal approach was adopted, with curettage and implantation of iliac bone autograft.…”

Section: Commentsmentioning

confidence: 99%

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Daher

Júnior

et al. 2008

Radiol Bras

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Osteoid Osteoma: Clinical Results with Thermocoagulation

Abstract: Percutaneous thermocoagulation is a safe and effective method for treatment of osteoid osteoma at any location. Repeated thermocoagulation is successful in patients with persistent symptoms.

Cited by 188 publications

References 11 publications

The healing pattern of osteoid osteomas on computed tomography and magnetic resonance imaging after thermocoagulation

The healing pattern of osteoid osteomas on computed tomography and magnetic resonance imaging after thermocoagulation

Coupled electrical-thermal model for monopolar and bipolar radiofrequency liver tumor ablation

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