Abstract
A 15 years old boy presented with an atypical osteoid osteoma (OO) in distal femur. He underwent radiofrequency ablation (RFA) elsewhere. He presented to our centre a year later with persisting pain. MR scan showed incomplete ablation of the nidus as there was only a single pass of the RF probe for a 14 mm long linear lesion. We also found penumbra sign and wall enhancement on contrast MRI suggestive of a Brodie’s abscess (BA). Under CT guidance the OO was drilled and BA was saucerised. Following this he was treated with culture sensitive antibiotics and his symptoms resolved. BA and OO are common differential diagnoses. RFA of OO leading to BA has not been reported in literature. Atypical linear OO requires multiple probe placements to ablate the long nidus. Diligent care should be taken to avoid intraoperative contamination in CT room which could lead to infection.
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Abbreviations
- OO:
-
Osteoid osteoma
- RFA:
-
Radiofrequency ablation
- BA:
-
Brodie’s abscess
- CT:
-
Computerized tomography
- MRI:
-
Magnetic resonance imaging
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AR and NN prepared the article and edited the images. JCK reported CT and MRI images and contributed to the image description in the article. RA is the interventional radiologist, who helped in placing the k-wires in the lesion under CT guidance. RR did the histopathological analysis and contributed to the image. BT edited the article and performed the surgery.
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All procedures performed on human participants in this study were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
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Rao, A., Nizaj, N., Kandathil, J.C. et al. Brodie’s Abscess Following Radiofrequency Ablation of an Atypical Osteoid Osteoma. JOIO 55 (Suppl 1), 256–260 (2021). https://doi.org/10.1007/s43465-020-00243-y
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DOI: https://doi.org/10.1007/s43465-020-00243-y