Impact of Lymphadenectomy on Survival After Unimodality Transthoracic Esophagectomy for Adenocarcinoma of Esophagus.

Extensive lymphadenectomy allows accurate staging. In patients who do not receive neoadjuvant treatment, it may confer a survival benefit. The number of lymph nodes retrieved may not be a good surrogate for extent of lymphadenectomy, and correlation with location is required.