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<p>Osteoid osteoma (OO) is a benign bone tumour, usually affecting young people. In over 50% of cases, it is located in the diaphysis of the femur or tibia, with the proximal femur most frequently affected. Atypical locations of osteoid osteoma present a diagnostic challenge due to their unusual symptoms and may lead to misdiagnosis and delayed treatment. Osteoid osteomas are usually cortical lesions but can occur anywhere within the bone, including medullary, subperiosteal (most commonly in the talus), and intracapsular sites. Computed tomography-guided radiofrequency thermal ablation (CT-RFTA) is a minimally invasive treatment option for osteoid osteomas and has been proven effective and safe for the treatment of OOs in typical locations. The ablation process for lesions in these sites is considerably more straightforward than in atypical or complex locations. The authors report their experience with a series of particularly challenging osteoid osteoma ablation cases in unusual locations.</p>

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Radiofrequency thermal ablation (RFTA) of osteoid osteoma in atypical/challenging locations: a joint experience from two referral centers

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年10月6日

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  • Gian Luca Desi,
  • Federica Arabia,
  • Andrea Antonello,
  • Tiziana Robba,
  • Gianluca Bisinella,
  • Sara Battisti

摘要

Osteoid osteoma (OO) is a benign bone tumour, usually affecting young people. In over 50% of cases, it is located in the diaphysis of the femur or tibia, with the proximal femur most frequently affected. Atypical locations of osteoid osteoma present a diagnostic challenge due to their unusual symptoms and may lead to misdiagnosis and delayed treatment. Osteoid osteomas are usually cortical lesions but can occur anywhere within the bone, including medullary, subperiosteal (most commonly in the talus), and intracapsular sites. Computed tomography-guided radiofrequency thermal ablation (CT-RFTA) is a minimally invasive treatment option for osteoid osteomas and has been proven effective and safe for the treatment of OOs in typical locations. The ablation process for lesions in these sites is considerably more straightforward than in atypical or complex locations. The authors report their experience with a series of particularly challenging osteoid osteoma ablation cases in unusual locations.