The Experts below are selected from a list of 1959 Experts worldwide ranked by ideXlab platform
Geert M. Vanderschueren - One of the best experts on this subject based on the ideXlab platform.
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radiofrequency ablation of spinal Osteoid Osteoma clinical outcome
Spine, 2009Co-Authors: Geert M. Vanderschueren, Antoni H. M. Taminiau, Wim R. Obermann, Johan L. Bloem, P Sander D Dijkstra, Arian R Van ErkelAbstract:Study design A prospective study on 24 patients with spinal Osteoid Osteoma treated with radiofrequency ablation (RFA). Objective To determine if and when computed tomography (CT)-guided RFA is a safe and effective treatment for spinal Osteoid Osteomas. Summary of background data Surgery has been considered the standard treatment for spinal Osteoid Osteomas. Surgery may cause spinal instability, infection, and nervous injury. We evaluated CT-guided RFA as an alternative treatment. Methods A total of 28 RFA procedures in 24 patients with spinal Osteoid Osteoma were performed, using a 5-mm noncooled electrode. Clinical symptoms and spinal deformity were evaluated before and after the procedure. Unsuccessful treatment was defined as the presence of residual or recurrent symptoms. The mean follow-up was 72 months (range: 9-142 months). Results Nineteen (79%) patients were successfully treated after 1 RFA, and all except one after repeat RFA. One patient with nerve root compression needed further surgery. No complications were observed. Spinal deformity persisted in 3 of 7 patients after successful RFA. Conclusion CT-guided RFA is a safe and effective treatment for spinal Osteoid Osteoma. Surgery should be reserved for lesions causing nerve root compression.
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Osteoid Osteoma factors for increased risk of unsuccessful thermal coagulation
Radiology, 2004Co-Authors: Geert M. Vanderschueren, Antoni H. M. Taminiau, Wim R. Obermann, Annette A Van Den Berghuysmans, Johan L. BloemAbstract:PURPOSE: To retrospectively identify risk factors that may impede a favorable clinical outcome after thermocoagulation for Osteoid Osteoma. MATERIALS AND METHODS: Informed consent (permission for the procedure and permission to use patient data for analysis) was obtained from all patients who met study criteria, and institutional review board did not require approval. Analysis included age, sex, size and location of Osteoid Osteoma, presence of calcified nidus, number of needle positions used for coagulation, coagulation time, accuracy of needle position, learning curve of radiologist, and previous treatment in 95 consecutive patients with Osteoid Osteoma treated with thermocoagulation. With χ2 analysis, Fisher exact test, or unpaired Student t test and logistic regression analysis, 23 unsuccessfully treated patients were compared with 72 successfully (pain-free) treated patients. RESULTS: Parameters associated with decreased risk for treatment failure were advanced age (mean age, 24 years in treatment su...
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Osteoid Osteoma: Clinical Results with Thermocoagulation
Radiology, 2002Co-Authors: Geert M. Vanderschueren, Antoni H. M. Taminiau, Wim R. Obermann, Johan L. BloemAbstract:PURPOSE: To determine the clinical results in an unselected group of consecutive patients with Osteoid Osteoma treated with thermocoagulation. MATERIALS AND METHODS: In 97 consecutive patients with clinical and/or radiologic evidence of Osteoid Osteoma at any location, the clinical symptoms were assessed before and after thermocoagulation with computed tomographic guidance. A good response was defined as disappearance of symptoms that were manifested at presentation and attributed to Osteoid Osteoma. Clinical assessment was performed prior to discharge; within 2 weeks after the procedure; and at 3, 6, 12, and 24 months follow-up. After 24 months, a postal questionnaire was used for assessment. RESULTS: The mean clinical follow-up after the only or the last thermocoagulation session was 41 months (range, 5–81 months). Response was good after one session of thermocoagulation in 74 (76%) of 97 patients, and the 95% CI was 68% to 85%. Patients with persistent symptoms did well after repeated thermocoagulation...
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Osteoid Osteoma of the spine treated with percutaneous computed tomography-guided thermocoagulation.
Spine, 2000Co-Authors: Jos A. Cové, Antonie H. Taminiau, Willem R. Obermann, Geert M. VanderschuerenAbstract:STUDY DESIGN: Two cases are reported in which an Osteoid Osteoma of the lumbar spine was treated with CT-guided thermocoagulation. OBJECTIVES: To review an alternative and minimally invasive treatment for spinal Osteoid Osteomas. SUMMARY OF BACKGROUND DATA: Surgical resection of a spinal Osteoid Osteoma can, depending on the location, be a formidable undertaking. Bone scintigraphy can be helpful in intraoperative identification. More recently, resection through a computed tomography-guided drill hole was found to minimize exposure. Using a thermocoagulation probe, as has been used in Osteoid Osteoma of the extremities, may be technically easier and cause less morbidity. METHOD: With the patient under general anesthesia, a bone biopsy cannula was introduced into the center of the Osteoid Osteoma. Material was subjected to histologic examination. A thermocoagulation probe was then inserted and heated to 90 C for 4 minutes. The two patients were kept overnight for observation. RESULTS: Both patients had complete pain relief and no evidence of recurrence after 2 years' follow-up. There were no complications. Scoliosis resolved in one patient and persisted in the other. CONCLUSION: Percutaneous computed tomography-guided thermocoagulation is a minimally invasive and technically straightforward method to achieve ablation of a spinal Osteoid Osteoma. No complications were encountered in these two patients. Future research should focus on the safety of thermocoagulation, especially cephalad to the level of the conus medullaris.
P Bonnevialle - One of the best experts on this subject based on the ideXlab platform.
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Osteoid Osteoma mr imaging versus ct
Radiology, 1994Co-Authors: J Assoun, J J Railhac, Christiane Baunin, G Richardi, P P Fajadet, J M Giron, P Maquin, J Haddad, P BonnevialleAbstract:PURPOSE: To compare the performance of computed tomography (CT) and magnetic resonance (MR) imaging in diagnosis of Osteoid Osteoma. MATERIALS AND METHODS: Nineteen patients with histologically proved Osteoid Osteoma underwent CT and MR imaging before excision of the lesion. CT and MR images were compared regarding lesion conspicuity and detection of marrow, soft-tissue, and/or synovial changes adjacent to the primary lesion. RESULTS: CT was more accurate than MR imaging in detection of the Osteoid Osteoma nidus in 63% of cases. MR imaging was better than CT in showing intramedullary and soft-tissue changes in all cases. This may produce a misleading aggressive appearance on MR images. There was a statistically significant correlation between presence or absence of marrow or soft-tissue changes and treatment with antiinflammatory medications (P < .05). CONCLUSION: CT remains the best imaging modality for diagnosis of Osteoid Osteoma. MR images should not be interpreted without reference to plain radiograp...
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Osteoid Osteoma percutaneous resection with ct guidance
Radiology, 1993Co-Authors: J Assoun, J J Railhac, P Bonnevialle, C Poey, Salles J De Gauzy, Christiane Baunin, J P Cahuzac, J L Clement, B Coustets, N RailhacAbstract:In 24 patients with presumed Osteoid Osteoma in the appendicular skeleton (n = 23) and lumbar spine (n = 1), percutaneous resection with a drill system and computed tomographic (CT) guidance was performed. In the procedure, a 7-mm-diameter toothed drill inserted over a guide wire is used to remove the nidus. Twenty-three patients were successfully treated. Histologic confirmation of Osteoid Osteoma was obtained in 19 cases. In one patient, open surgery with bone grafting and osteosynthesis was necessary because of inadvertent extensive bone resection resulting from damage to the drill. All patients have remained free of pain and recurrence for 3-24 months. Although the procedure was effective in all patients, the 7-mm diameter of the toothed drill may cause difficulty in small bones or even danger in areas such as the posterior vertebral arch. In locations such as the tubular bones of the lower extremity and the femoral neck, however, this technique is feasible and may become the treatment of choice for o...
Pierrelouis Docquier - One of the best experts on this subject based on the ideXlab platform.
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Painless Osteoid Osteoma of the distal phalanx of a toe.
Journal of surgical case reports, 2021Co-Authors: Roméo Haoudou, Jacques Malghem, Christine Galant, Pierrelouis DocquierAbstract:Osteoid Osteoma is a benign bone tumor, found in young subjects with typical intense focal pain, nocturnal exacerbation and favorable response to salicylates. Painless Osteoid Osteomas are rare and their diagnosis is difficult, especially whether their imaging appearance is not typical. We report the case of a 13-year-old boy with a spontaneous painless lesion of the distal phalanx of a toe. The main symptom was a swelling of the distal portion of the toe with an enlargement of its nail. The radiological aspect was not typical. A computed tomography showed a small lucent bone area within a focal hypertrophy of the phalangeal tuft and an Osteoid Osteoma was proposed as main diagnosis. The tumor was completely removed and the histopathological examination confirmed the diagnosis of Osteoid Osteoma. This clinical case shows that painless swelling of a toe may be indicative of an Osteoid Osteoma.
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intra articular Osteoid Osteoma mimicking juvenile arthritis
Case reports in orthopedics, 2014Co-Authors: Sidi Yaya Traore, Dana Ioana Dumitriu, Pierrelouis DocquierAbstract:In case of intra-articular Osteoid Osteoma, misdiagnosis as juvenile arthritis may occur, delaying adequate treatment. We report cases of intra-articular Osteoid Osteomas in children that were misdiagnosed and initially inappropriately treated with intra-articular corticoid injection. Diagnosis of Osteoid Osteoma was finally given by CT-scan and appropriate treatment by radiofrequency ablation or surgical ablation was performed. Clinicians and radiologists should be aware of the potentially confusing clinical and imaging findings associated with intra-articular Osteoid Osteoma.
J Assoun - One of the best experts on this subject based on the ideXlab platform.
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Osteoid Osteoma mr imaging versus ct
Radiology, 1994Co-Authors: J Assoun, J J Railhac, Christiane Baunin, G Richardi, P P Fajadet, J M Giron, P Maquin, J Haddad, P BonnevialleAbstract:PURPOSE: To compare the performance of computed tomography (CT) and magnetic resonance (MR) imaging in diagnosis of Osteoid Osteoma. MATERIALS AND METHODS: Nineteen patients with histologically proved Osteoid Osteoma underwent CT and MR imaging before excision of the lesion. CT and MR images were compared regarding lesion conspicuity and detection of marrow, soft-tissue, and/or synovial changes adjacent to the primary lesion. RESULTS: CT was more accurate than MR imaging in detection of the Osteoid Osteoma nidus in 63% of cases. MR imaging was better than CT in showing intramedullary and soft-tissue changes in all cases. This may produce a misleading aggressive appearance on MR images. There was a statistically significant correlation between presence or absence of marrow or soft-tissue changes and treatment with antiinflammatory medications (P < .05). CONCLUSION: CT remains the best imaging modality for diagnosis of Osteoid Osteoma. MR images should not be interpreted without reference to plain radiograp...
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Osteoid Osteoma percutaneous resection with ct guidance
Radiology, 1993Co-Authors: J Assoun, J J Railhac, P Bonnevialle, C Poey, Salles J De Gauzy, Christiane Baunin, J P Cahuzac, J L Clement, B Coustets, N RailhacAbstract:In 24 patients with presumed Osteoid Osteoma in the appendicular skeleton (n = 23) and lumbar spine (n = 1), percutaneous resection with a drill system and computed tomographic (CT) guidance was performed. In the procedure, a 7-mm-diameter toothed drill inserted over a guide wire is used to remove the nidus. Twenty-three patients were successfully treated. Histologic confirmation of Osteoid Osteoma was obtained in 19 cases. In one patient, open surgery with bone grafting and osteosynthesis was necessary because of inadvertent extensive bone resection resulting from damage to the drill. All patients have remained free of pain and recurrence for 3-24 months. Although the procedure was effective in all patients, the 7-mm diameter of the toothed drill may cause difficulty in small bones or even danger in areas such as the posterior vertebral arch. In locations such as the tubular bones of the lower extremity and the femoral neck, however, this technique is feasible and may become the treatment of choice for o...
Johan L. Bloem - One of the best experts on this subject based on the ideXlab platform.
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radiofrequency ablation of spinal Osteoid Osteoma clinical outcome
Spine, 2009Co-Authors: Geert M. Vanderschueren, Antoni H. M. Taminiau, Wim R. Obermann, Johan L. Bloem, P Sander D Dijkstra, Arian R Van ErkelAbstract:Study design A prospective study on 24 patients with spinal Osteoid Osteoma treated with radiofrequency ablation (RFA). Objective To determine if and when computed tomography (CT)-guided RFA is a safe and effective treatment for spinal Osteoid Osteomas. Summary of background data Surgery has been considered the standard treatment for spinal Osteoid Osteomas. Surgery may cause spinal instability, infection, and nervous injury. We evaluated CT-guided RFA as an alternative treatment. Methods A total of 28 RFA procedures in 24 patients with spinal Osteoid Osteoma were performed, using a 5-mm noncooled electrode. Clinical symptoms and spinal deformity were evaluated before and after the procedure. Unsuccessful treatment was defined as the presence of residual or recurrent symptoms. The mean follow-up was 72 months (range: 9-142 months). Results Nineteen (79%) patients were successfully treated after 1 RFA, and all except one after repeat RFA. One patient with nerve root compression needed further surgery. No complications were observed. Spinal deformity persisted in 3 of 7 patients after successful RFA. Conclusion CT-guided RFA is a safe and effective treatment for spinal Osteoid Osteoma. Surgery should be reserved for lesions causing nerve root compression.
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Osteoid Osteoma factors for increased risk of unsuccessful thermal coagulation
Radiology, 2004Co-Authors: Geert M. Vanderschueren, Antoni H. M. Taminiau, Wim R. Obermann, Annette A Van Den Berghuysmans, Johan L. BloemAbstract:PURPOSE: To retrospectively identify risk factors that may impede a favorable clinical outcome after thermocoagulation for Osteoid Osteoma. MATERIALS AND METHODS: Informed consent (permission for the procedure and permission to use patient data for analysis) was obtained from all patients who met study criteria, and institutional review board did not require approval. Analysis included age, sex, size and location of Osteoid Osteoma, presence of calcified nidus, number of needle positions used for coagulation, coagulation time, accuracy of needle position, learning curve of radiologist, and previous treatment in 95 consecutive patients with Osteoid Osteoma treated with thermocoagulation. With χ2 analysis, Fisher exact test, or unpaired Student t test and logistic regression analysis, 23 unsuccessfully treated patients were compared with 72 successfully (pain-free) treated patients. RESULTS: Parameters associated with decreased risk for treatment failure were advanced age (mean age, 24 years in treatment su...
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Osteoid Osteoma: Clinical Results with Thermocoagulation
Radiology, 2002Co-Authors: Geert M. Vanderschueren, Antoni H. M. Taminiau, Wim R. Obermann, Johan L. BloemAbstract:PURPOSE: To determine the clinical results in an unselected group of consecutive patients with Osteoid Osteoma treated with thermocoagulation. MATERIALS AND METHODS: In 97 consecutive patients with clinical and/or radiologic evidence of Osteoid Osteoma at any location, the clinical symptoms were assessed before and after thermocoagulation with computed tomographic guidance. A good response was defined as disappearance of symptoms that were manifested at presentation and attributed to Osteoid Osteoma. Clinical assessment was performed prior to discharge; within 2 weeks after the procedure; and at 3, 6, 12, and 24 months follow-up. After 24 months, a postal questionnaire was used for assessment. RESULTS: The mean clinical follow-up after the only or the last thermocoagulation session was 41 months (range, 5–81 months). Response was good after one session of thermocoagulation in 74 (76%) of 97 patients, and the 95% CI was 68% to 85%. Patients with persistent symptoms did well after repeated thermocoagulation...
