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  • Title: Preliminary analysis of the benefits of different irradiation types on patients with postoperative locoregional recurrence of esophageal cell squamous carcinoma.
    Author: Gao HM, Shen WB, Zhang XY, Xu JR, Li YM, Li SG, Zhu SC.
    Journal: Ann Palliat Med; 2021 Sep; 10(9):9467-9479. PubMed ID: 34628872.
    Abstract:
    BACKGROUND: To explore the benefits of different types of irradiation on patients with postoperative locoregional recurrence (LRR) of thoracic esophageal squamous cell carcinoma (ESCC). METHODS: We analyzed the medical records of 344 patients with recurrent esophageal cancer (EC) at the Fourth Hospital of Hebei Medical University. All patients met an inclusion criteria that included having postoperative LRR (without distant metastasis), and having received either chemotherapy, radiotherapy, or chemoradiotherapy after LRR. Patients either received elective nodal irradiation (ENI) or involved field irradiation (IFI), with a stratified analysis performed on both groups. SPSS 19.0 software (IBM Corporation, Armonk, NY USA) was then used for statistical analysis. RESULTS: The median overall survival time of all patients after surgery was 33 months [95% confidence interval (CI): 28.3-37.7 months]; the median overall survival time of patients after recurrence after radiotherapy was 12.8 months (95% CI: 11.3-14.3 months). There were 276 cases (80.2%) of single local recurrence after surgery, and 68 cases (19.8%) of multiple local recurrence (≥2). The results of our multivariate analysis showed that the patient's gender, log odds of positive lymph nodes (LODDS), and the number of courses of chemotherapy were all independent factors affecting the patient's prognosis (P=0.003, P<0.001, and P<0.001). The results of stratified analysis showed that patients with esophageal lesion length <5.0 cm, stage N0, ≤9 surgically dissected lymph nodes, no positive regional lymph node metastasis (LNM), and LODDS ≤0.030 could benefit from ENI treatment (X2=4.208, P=0.032; X2=6.262, P=0.012; X2=10.359, P=0.001; X2=6.327, P=0.012; X2=6.026, P=0.014); and patients with ≥16 surgically dissected lymph nodes could benefit from IFI treatment (X2=4.429, P=0.035). CONCLUSIONS: Chemotherapy, radiotherapy, and chemoradiotherapy are all effective modes of treatment for patients with postoperative LRR of EC. Patients with shorter esophageal lesions determined by preoperative esophagography, earlier postoperative pathological N staging, lower LODDS scores, and fewer surgically dissected lymph nodes might benefit more from ENI treatment than from IFI. However, patients with a larger number of lymph nodes dissected during surgery might benefit more from IFI treatment. To further confirm this study's conclusions, multiple prospective studies should be undertaken in the future.
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