4.4 Article

Relapse after non-metastatic rhabdomyosarcoma: The impact of routine surveillance imaging on early detection and post-relapse survival

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PEDIATRIC BLOOD & CANCER
卷 70, 期 2, 页码 -

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WILEY
DOI: 10.1002/pbc.30095

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post-relapse survival; prognostic factors; radiological follow-up; relapse; rhabdomyosarcoma; surveillance imaging; symptoms

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This retrospective study examines the impact of routine surveillance imaging on recurrent tumors identification and post-relapse survival in patients with rhabdomyosarcoma. The findings suggest that surveillance imaging does not significantly improve the detection of relapse compared to clinical symptoms, but may have a positive effect on survival in patients with favorable prognostic scores.
BackgroundPatients with rhabdomyosarcoma (RMS) whose disease relapses have little chance of being cured, so front-line treatments are usually followed up with surveillance imaging in an effort to detect any recurrences as early as possible, and thereby improve post-relapse outcomes. The real benefit of such routine surveillance imaging in RMS remains to be demonstrated, however. This retrospective, single-center study examines how well surveillance imaging identifies recurrent tumors and its impact on post-relapse survival. MethodsThe analysis concerned 79 patients <21 years old treated between 1985 and 2020 whose initially localized RMS relapsed. Clinical findings, treatment modalities, and survival were analyzed, comparing patients whose relapse was first suspected from symptoms they developed (clinical symptoms group) with those whose relapse was identified by radiological surveillance (routine imaging group). ResultsTumor relapses came to light because of clinical symptoms in 42 cases, and on routine imaging in 37. The time to relapse was much the same in the two groups. The median overall survival (OS) and 5-year OS rate were, respectively, 10 months and 12.6% in the clinical symptoms group, and 11 months and 27.5% in the routine imaging group (p-value .327). Among patients with favorable prognostic scores, survival was better for those in the routine imaging group (5-year OS 75.0% vs. 33.0%, p-value .047). ConclusionIt remains doubtful whether surveillance imaging has any real impact on RMS relapse detection and patients' post-relapse survival. Further studies are needed to establish the most appropriate follow-up recommendations, taking the potentially negative effects of regular radiological exams into account.

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