Abstract :
[en] Introduction: The toxicity associated with hepatic radioembolization (RE) by microspheres labeled with Yttrium 90 (90Y) has a very variable incidence between studies and depends on a multitude of parameters. The objective of this study is to assess the various predictive factors of this toxicity, inherent of the patient or the type of procedure. Patients and methods: Single-center retrospective study including 85 patients with hepatocarcinoma treated by hepatic RE. The medico-technical and clinical-biological parameters were studied over a defined time interval and the toxicity of the latter graded according to the Common Terminology Criteria for Adverse Events. Dosimetry was carried out on the basis of the 90Y PET/CT using the “Simplicit90Y” software and the statistical analysis using the “SAS” software. Results: Post-RE hepatotoxicity observed in 77.7% of our population with maximum grade 3 toxicity in 10.6% of cases. The presence post-RE of hyperbilirubinemia and ascites were detected in 32.1% (only grade 1-2) and 27.1% (4.7% grade 3) of patients, respectively. The pre-therapeutic presence of cirrhosis and/or hyperbilirubin are predictive of post-RE toxicity. Other biological elements studied are less relevant in practice. Radioembolization-induced liver disease (REILD) was observed in 15.3% of cases, mainly of moderate form (13.0%). No impact of the dosimetric approach was observed. Conclusion: A personalized dosimetric approach does not generate additional side effects, while maximizing the tumor dose and therefore the therapeutic effect. The presence of cirrhosis and hyperbilirubinemia pre-RE seem to be the two predominant in the appearance of REILD.
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