Reirradiation of bone metastasis: A narrative review of the literature.

Autor: Agnoux E; Radiation Department, Institut de cancérologie de Lorraine, 54519 Vandœuvre-Lès-Nancy, France. Electronic address: e.agnoux@nancy.unicancer.fr., Gehin W; Radiation Department, Institut de cancérologie de Lorraine, 54519 Vandœuvre-Lès-Nancy, France., Stefani A; Radiation Department, Institut de cancérologie de Lorraine, 54519 Vandœuvre-Lès-Nancy, France., Marchesi V; Medical Physics Department, Institut de cancérologie de Lorraine, 54519 Vandœuvre-Lès-Nancy, France., Martz N; Radiation Department, Institut de cancérologie de Lorraine, 54519 Vandœuvre-Lès-Nancy, France., Faivre JC; Radiation Department, Institut de cancérologie de Lorraine, 54519 Vandœuvre-Lès-Nancy, France.
Jazyk: angličtina
Zdroj: Cancer radiotherapie : journal de la Societe francaise de radiotherapie oncologique [Cancer Radiother] 2024 Nov; Vol. 28 (6-7), pp. 568-575. Date of Electronic Publication: 2024 Oct 10.
DOI: 10.1016/j.canrad.2024.07.009
Abstrakt: Patients with bone metastasis are prevalent among those receiving palliative radiotherapy (RT), with approximately 20 % requiring reirradiation (reirradiation). The goal of bone reirradiation may be local control (oligoreoccurrence or oligoprogression of a previously treated lesion or in a previous treatment field) or symptomatic (threatening or painful progression). Published data on bone reirradiation indicate almost two-thirds of overall pain response. The primary organ at risk (especially for spine treatment) is the spinal cord. The risk of radiation myelitis is<1 % for cumulative doses of<50Gy. Intensity-modulated RT (IMRT) and stereotactic RT (SRT) appear to be safer than three-dimensional RT (3DRT), although randomized trials comparing these techniques in reirradiation are lacking. Reirradiation requires multidisciplinary assessment. Alternative treatments for bone metastases (surgery, interventional radiology, etc.) must be considered. Patients should have a performance status≤2, with at least a 1-month interval between treatments. The planning process involves reviewing previous RT plans, cautious dose adjustments, and precise target delineation and dose distribution to minimize toxicity. Cumulative dosimetry, patient consent, and vigilant post-treatment monitoring and dose reporting are crucial.
(Copyright © 2024. Published by Elsevier Masson SAS.)
Databáze: MEDLINE
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