Clinical and dosimetric factors associated with the development of hematologic toxicity in locally advanced cervical cancer treated with chemotherapy and 3D conformal radiotherapy
- PMID: 30127680
- PMCID: PMC6097399
- DOI: 10.1016/j.rpor.2018.07.011
Clinical and dosimetric factors associated with the development of hematologic toxicity in locally advanced cervical cancer treated with chemotherapy and 3D conformal radiotherapy
Abstract
Aim: To identify clinical and dosimetric factors associated with the development of hematologic toxicity (HT) for cervical cancer (CC) treated with chemotherapy and 3D conformal radiotherapy.
Background: Chemoradiotherapy is the standard of care management for CC patients with IB2-IVA clinical stages (CS). This treatment carries toxicities, standing out the one that occurs at the hematologic level.
Subjects and methods: CC patients with IB2-IVA CS treated with chemotherapy and 3D conformal radiotherapy (50 Gy) plus Brachyterapy (7 Gy x3 or 9 Gy x2) at our institution between March 2016 and March 2017. Clinical and dosimetric factors were studied as was their probable association with the development of HT.
Results: 59 patients were analyzed. 89.8% of the subjects developed some grade of HT and 50.2% developed ≥grade 2 toxicity. No statistical relationship was found for the dosimetric factors: V10 > 90% (p = 0.47) and V20 > 80% (p = 0.17). Regarding clinical factors: neither age >50 years (p = 0.88) nor diabetes mellitus (DM) showed statistical relationship with development of ≥grade 2 HT (p = 0.88 and p = 0.61, respectively). On the contrary, obesity showed a significant association (p = 0.02). For other factors analyzed, we found statistical correlation for epidermoid histology and ≥III A CS (p = 0.01 and p = 0.02, respectively).
Conclusions: We did not find statistical relationship between HT and the clinical factors of age >50 years and DM. Statistical relationship for the dosimetric factors V10 > 90% and V20 > 80% was not found as well. On the contrary, obesity, epidermoid histology and ≥IIIA CS, showed statistical significance for development of HT ≥grade 2.
Keywords: Cervical cancer; Chemoradiotherapy; Hematologic toxicity.
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