Objectives: The prognosis of patients with locally advanced esophageal squamous cell carcinoma with different recurrence backgrounds is highly heterogeneous. This study aims to explore the effects of recurrence patterns on prognosis.
Methods: The phase III, multicenter, prospective NEOCRTEC5010 trial enrolled 451 patients with stage IIB-III esophageal squamous cell carcinoma randomly assigned to neoadjuvant chemoradiotherapy combined with surgery (NCRT group) or surgery alone (S group) and followed them long-term. We investigated the effects of recurrence patterns on survival in patients undergoing radical esophagectomy.
Results: In total, 353 patients were included in the study. The 5-year overall survival of patients with different recurrence patterns was significantly different: recurrence versus recurrence-free (17.8% vs 89.2%; P < .001), early recurrence versus late recurrence (4.6% vs 51.2%; P < .001), and distant metastasis versus locoregional recurrence (17.0% vs 20.0%; P = .666). Patients with early recurrence had significantly shorter survival after recurrence than those with late recurrence (hazard ratio, 1.541; 95% confidence interval, 1.047-2.268, P = .028). There was no significant difference in postrecurrence survival between patients with distant metastasis and locoregional recurrence (hazard ratio, 1.181; 95% confidence interval, 0.804-1.734; P = .396). Multivariate logistic analysis showed that pN1 stage, lymph node dissection <20, and lack of response to NCRT were independent risk factors for postoperative early recurrence. Multivariate Cox regression suggested that NCRT, age ≥60 years, early recurrence, and the pN1 stage were independent risk factors for shortened survival after recurrence.
Conclusions: Prerecurrence primary tumor stage is inaccurate in predicting postrecurrence survival. In contrast, recurrence patterns can guide follow-up while also predicting postrecurrence survival. NCRT prolongs disease-free survival but is associated with a worse prognosis in patients with recurrence, especially early recurrence.
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