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Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,632
Online ISSN 1827-191X
Tabira Y., Kitamura N., Yoshioka M., Tanaka M., Nakano K., Toyota N., Mori T.
From the First Department of Surgery, Kumamoto University School of Medicine Kumamoto City, Kumamoto, Japan
Background. Significance of three-field lymhpadenectomy for carcinoma of the thoracic esophagus was examined retrospectively based on depth of tumor infiltration, lymph nodal involvements and long-term survival.
Methods. One hundred and fifty-two consecutive patients who underwent curative esophagectomy for thoracic carcinoma invading to submucosa (pT1) or deeper layers of the esophageal wall from 1983 to 1996 were examined. Sixty-six patients underwent three-field lymphadenectomy (3F) and 86 underwent two-field lymphadenectomy (2F). Survival curves were compared between 3F and 2F after stratifications according to depth of tumor infiltration, the number of positive nodes (0, 1 to 4, 5 or more), and positive intrathoracic recurrent nerve-chain nodes.
Results. Overall 5-year survival rate for 3F was 43.8%, while it was 30.2% for 2F (p=0.07). In 41 patients with pT1 cancers, the 5-year survival rate for 3F was 55.7%, while it was 41.4% for 2F (p=NS). In patients with cancers invading to muscularis propria (pT2), the 5-year survival rate for 3F was 49.4%, while it was 30.7% for 2F (p=0.06). In patients with tumors invading to adventitia, there was no significant difference. In patients with one to four positive nodes, the 5-year survival rates for 3F was 50.1%, while it was 24.1% for 2F (p=0.01). There was no significant difference in the subgroups with no positive nodes and five or more. In subgroups with positive recurrent nerve-chain nodes, the 5-year survival rate for 3F was 27.9%, while it was 0% for 2F (p=0.01).
Conclusions. Significance of three-field lymphadenectomy was found in patients with one to four positive nodes or positive intrathoracic recurrent nerve-chain nodes.