AI Article Synopsis
- The study examined early lymph node metastasis in patients with thoracic esophageal squamous cell carcinoma to assess its impact on survival.
- Data from 126 patients who underwent surgery were analyzed, revealing that common metastasis sites included the upper mediastinum, paraesophageal areas, and the left gastric artery.
- Findings indicated that certain metastasis patterns, particularly involving the subcarinal and middle/lower thoracic paraesophageal regions, are independent risk factors for survival and should be considered in prognosis evaluations using the 7th edition UICC-AJCC TNM classification.
Article Abstract
Objective: To investigate the pattern of early lymph node metastasis of thoracic esophageal squamous cell carcinoma and its prognostic value.
Methods: Clinical and follow-up data of 126 patients with pathological stage pN1 of esophageal squamous cell carcinoma undergoing radical esophagectomy in our department from January 2005 to December 2008 were analyzed retrospectively. Impact of lymph node metastasis pattern on prognosis was investigated.
Results: The relatively common sites of lymph node metastasis were upper mediastinum(53.8%), middle and lower thoracic paraesophageal(38.3%), right and left cardiac(34.4%) and the left gastric artery(36.8%). Univariate analysis showed that the lymph node metastasis of subcarinal, middle and lower thoracic paraesophageal and the left gastric artery was associated with 5-year survival rate. Multivariate analysis revealed that the presence of subcarinal and middle and lower thoracic paraesophagea lymph node metastasis was an independent risk factor of survival.
Conclusions: Upper mediastinal, middle and lower thoracic paraesophageal, right and left cardiac and the left gastric artery are the earliest lymph node metastasis sites of esophageal squamous cell carcinoma. The presence of subcarinal and middle and lower thoracic paraesophagea lymph node metastasis is an independent risk factor of survival. Patient prognosis should be analyzed with lymph node metastasis pattern based on the 7th edition UICC-AJCC TNM classification system.
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