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. 2024 Feb 29;6(1):tzae007. doi: 10.1093/bjro/tzae007

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© The Author(s) 2024. Published by Oxford University Press on behalf of the British Institute of Radiology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

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Figure 6. — Cryoablation for osteoid osteoma in a 20-year-old patient. (A) Anteroposterior hip radiograph revealed a small lucent lesion with a narrow zone of transition in the basicervical region of the right femoral neck (arrow). (B) MRI axial T₂W fat-suppressed image revealed a well-circumscribed cortical-based T₂W hyperintense lesion (arrow) and adjacent marrow oedema (arrowheads). (C) MRI coronal T₁W image revealed a well-circumscribed lesion isointense to muscle (arrow). Findings are consistent with an osteoid osteoma and decision was made to treat via cryoablation. (D) Under CT guidance, an IceSphere ablation probe (Boston Scientific, USA) was advanced into the lesion (arrow). (E) Intra-procedural CT in soft tissue window confirmed ice formation (arrowheads) encompassing the lesion.