BACKGROUND: Staging is inaccurate for cT2N0 esophageal cancer, and patients often are clinically mis-staged. This study aimed to evaluate the outcome after upfront surgery or neoadjuvant therapy, considering the impact of clinical "mis-staging." METHODS: This study reviewed patients with squamous cell carcinoma (SCC) or adenocarcinoma (ADK) of the esophagus who underwent upfront surgery (S group) or neoadjuvant treatment (chemoradiotherapy [CRT] group) for cT2N0 cancer. Overall survival (OS), disease-free survival (DFS), morbidity, and mortality were evaluated. Correctly staged (cTNM = pTNM), understaged (cTNM < pTNM), and overstaged (cTNM > pTNM) patients in the S group and the CRT group were analyzed. Risk factors for unexpected lymph-node involvement were identified in the S group and for cancer-related death in the whole study cohort. RESULTS: The study enrolled 229 patients with cT2N0 esophageal cancer. The 5-year OS rate was 34.2% in the S group versus 55.7% in the CRT group (p = 0.0088). The DFS also was significantly higher (p = 0.01). The morbidity and mortality rates were similar. In the S group, the cTNM was correctly staged for 21.4% and understaged for 63.4% of the patients, with 48.7% of the patients showing unexpected nodal involvement. A tumor length of 3 cm or more was an independent predictor of nodal metastases in SCC (p = 0.03), as was lymphovascular invasion (LVI) in ADK (p < 0.01). Cancer-related mortality was independently associated with lymph-node metastases (p = 0.03) and treatment by upfront surgery (p = 0.01). CONCLUSION: Given the high rate of understaged patients in this study (63.4%), the authors advocate for combining the induction therapy with surgery in cT2N0, achieving better survival with similar morbidity and mortality.
BACKGROUND: Staging is inaccurate for cT2N0 esophageal cancer, and patients often are clinically mis-staged. This study aimed to evaluate the outcome after upfront surgery or neoadjuvant therapy, considering the impact of clinical "mis-staging." METHODS: This study reviewed patients with squamous cell carcinoma (SCC) or adenocarcinoma (ADK) of the esophagus who underwent upfront surgery (S group) or neoadjuvant treatment (chemoradiotherapy [CRT] group) for cT2N0 cancer. Overall survival (OS), disease-free survival (DFS), morbidity, and mortality were evaluated. Correctly staged (cTNM = pTNM), understaged (cTNM < pTNM), and overstaged (cTNM > pTNM) patients in the S group and the CRT group were analyzed. Risk factors for unexpected lymph-node involvement were identified in the S group and for cancer-related death in the whole study cohort. RESULTS: The study enrolled 229 patients with cT2N0 esophageal cancer. The 5-year OS rate was 34.2% in the S group versus 55.7% in the CRT group (p = 0.0088). The DFS also was significantly higher (p = 0.01). The morbidity and mortality rates were similar. In the S group, the cTNM was correctly staged for 21.4% and understaged for 63.4% of the patients, with 48.7% of the patients showing unexpected nodal involvement. A tumor length of 3 cm or more was an independent predictor of nodal metastases in SCC (p = 0.03), as was lymphovascular invasion (LVI) in ADK (p < 0.01). Cancer-related mortality was independently associated with lymph-node metastases (p = 0.03) and treatment by upfront surgery (p = 0.01). CONCLUSION: Given the high rate of understaged patients in this study (63.4%), the authors advocate for combining the induction therapy with surgery in cT2N0, achieving better survival with similar morbidity and mortality.
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