Case report: Third-degree skin and soft tissue burn after radiofrequency ablation of an osteoid osteoma guided through a triple-crown biopsy cannula

This is a case report of a 4-year-old girl who sustained a femoral shaft fracture 2 weeks after radiofrequency ablation of an osteoid osteoma. The fracture occurred after a relatively low-energy impact, jumping off the second to last step of a staircase. The pathologic fracture was successfully treated with closed reduction and spica casting, with full return to activities. Cases have been reported in the literature of femoral shaft fractures in older patients after radiofrequency ablation, but all are farther out than 2 weeks and none in patients as young as 4 years.

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Case report: late subtrochanteric fracture post radiofrequency ablation of osteoid osteoma

Clinical Cases in Mineral and Bone Metabolism ◽

10.11138/ccmbm/2014.11.2.145 ◽

2014 ◽

Author(s):

E Bonicoli

Keyword(s):

Case Report ◽

Radiofrequency Ablation ◽

Osteoid Osteoma ◽

Subtrochanteric Fracture

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Intraarticular Osteoid Osteoma: MRI Characteristics and Clinical Presentation Before and After Radiofrequency Ablation Compared to Extraarticular Osteoid Osteoma

RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren ◽

10.1055/a-1181-9041 ◽

2020 ◽

Vol 192 (12) ◽

pp. 1190-1199

Author(s):

Thomas Germann ◽

Marc-André Weber ◽

Burkhard Lehner ◽

Laurent Kintzele ◽

Iris Burkholder ◽

...

Keyword(s):

Radiofrequency Ablation ◽

Soft Tissue ◽

Contrast Enhancement ◽

Osteoid Osteoma ◽

Clinical Presentation ◽

Periosteal Reaction ◽

Ct Guided ◽

Tissue Edema ◽

Before And After ◽

Mri Characteristics

Purpose To determine MRI characteristics and the clinical presentation of intraarticular osteoid osteomas (OO) before and after treatment with CT-guided radiofrequency ablation (RFA) compared with extraarticular osteoid osteomas. Materials and Methods In a retrospective study, n = 21 patients with an intraarticular OO were matched with a control group of n = 21 patients with an extraarticular OO at a comparable anatomical position. All patients underwent CT-guided RFA and preinterventional MRI. In n = 31 cases, follow-up MR imaging was available. MR images were analyzed for morphologic features: effusion and synovitis, bone marrow edema (BME), soft tissue edema, periosteal reaction as well as T1 / T2 signal and contrast enhancement of the nidus. Recorded clinical parameters included the initial diagnosis, the course of pain symptoms after RFA and the incidence of complications. Results The nidus was detectable in all patients on MRI. BME had the highest sensitivity in both intra- and extraarticular OO (100 %). Effusion and synovitis were only observed in the intraarticular OO group (n = 21) with a perfect sensitivity and specificity (100 %) and a high negative predictive value (85 %). Soft tissue edema was significantly more present in patients with intraarticular OO (p = 0.0143). No significant differences were present regarding periosteal reaction, T1/T2 signal and contrast enhancement of the nidus (p > 0.05). BME, contrast enhancement, soft tissue edema, periosteal reaction, effusion and synovitis, if preexisting, always decreased after RFA. In 66.7 % of patients with intraarticular OO, a false initial diagnosis was made (extraarticular: 19 %). All patients were free of pain after intervention. Complications following the RFA procedure did not occur. Conclusion MRI demonstrates the nidus and thus the OO in all cases regardless of the location. The characteristic MRI morphology of an intraarticular OO includes synovitis and joint effusion, which are always present and differentiate with perfect sensitivity/specificity from an extraarticular OO. In both intra- and extraarticular OOs pathologic MRI changes at least decreased or completely normalized and the clinical results after RFA were excellent. Key Points: Citation Format

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Radiofrequency Ablation of Osteoid Osteoma of Neck of Femur: A Case Report

Journal of Nepal Medical Association ◽

10.31729/jnma.5804 ◽

2021 ◽

Vol 59 (237) ◽

Author(s):

Sailendra Kumar Duwal Shrestha ◽

Anuj Jung Rayamajhi ◽

Prabhat Rawal ◽

Rossu Thapa ◽

Umash Karki ◽

...

Keyword(s):

Computed Tomography ◽

Case Report ◽

Radiofrequency Ablation ◽

Osteoid Osteoma ◽

Atypical Presentation ◽

Neck Of Femur ◽

First Case ◽

Nocturnal Pain ◽

Promising Treatment ◽

Minimal Invasion

Osteoid osteoma is the most common benign bone forming tumor characterized by a nidus surrounded by reactive sclerotic bone typically associated with nocturnal pain and most common in males less than 30 years. Diagnosis may be difficult in cases of atypical presentation, intraarticular localizations or very small size. Computed tomography guided radiofrequency ablation is one of the promising treatment methods being used with an advantage of minimal invasion, faster recovery and shorter hospitalization. We present a case of an 8-year-old boy with osteoid osteoma of neck of femur managed successfully with radiofrequency ablation. To our knowledge, this is the first case reported on radiofrequency ablation in Nepal.

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