BOne Metastases REgistry for Patients Undergoing cryoAbLation With curatIve purpoSe

Inclusion Criteria: * Bone metastases in patients with oligometastatic disease (\<5 bone/visceral metastases) or bone oligo-progressive disease (visceral or osseous multi-metastatic disease stable under systemic treatment except 1-3 progressing bone metastases) from solid tumours; * Number of target lesions ≤ 3 * Size of target lesion(s) \< 5 cm (largest diameter); * Referral to local ablative treatment by multidisciplinary tumour board (MDTB); * Treatment by percutaneous cryoablation with curative intent (i.e., complete tumour destruction) assessed as technically feasible by the IR in charge; * Procedure performed with a cryoablation system from Boston Scientific. Exclusion Criteria: * \< 18 years old; * Incapacity or refusal to give informed consent; * Ongoing pregnancy; * Health status not compatible with the minimum meaningful follow-up period (i.e., 12 months): * Karnofsky Performance Scale \< 60%, or * Bone metastases originating from rapidly evolving tumour histologies not allowing reasonable life expectancy of at least 12 months, or * Life expectancy \< 12 months * Infection of treatment site or systemic infection; * Uncorrectable coagulopathy; * Haematological disease (including multiple myeloma and plasmacytoma); * Concomitant radiation therapy or radiation therapy within 12 weeks before the planned cryoablation procedure.