title: Lymph node and perinodal tissue tumor involvement in patients with esophagectomy and three-field lymphadenectomy for carcinoma of the esophagus.
abstract: BACKGROUND
  Lymph node metastasis is a definitive prognostic factor; however, perinodal fat tumor invasion has not been fully elucidated.
  
  
  METHODS
  Periesophageal nodes and the surrounding fibrofatty tissue obtained from 131 patients who underwent esophagectomy were examined.
  
  
  RESULTS
  Of 9,789 nodes removed, 645 (6.6%) demonstrated invasion and 143 (1.5%) showed perinodal involvement. Of 131 patients 97 (74.0%) had lymph node involvement and 43 (32.8%) had perinodal fat involvement. The incidence of perinodal tissue involvement correlated significantly with the number of nodes involved; 23 (42.6%) of 54 patients with a total of 1-8 nodes involved and 19 (95.0%) of 20 patients with 9 or more involved nodes had perinodal involvement. The 5-year survival for 33 patients without involved nodes or perinodal tissue extension was 59.7%, compared to 14.0% for 43 patients with perinodal fat involvement.
  
  
  CONCLUSIONS
  Perinodal tissue carcinoma into the periesophageal fibrofatty tissue was a decisive prognostic factor in patients with curative resection for esophageal carcinoma.
authors.affiliation: First Department of Surgery, Faculty of Medicine, Kagoshima University, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Baba
authors.forename: T
authors.initials: T
authors.lastname: Aikou
authors.forename: S
authors.initials: S
authors.lastname: Natsugoe
authors.forename: C
authors.initials: C
authors.lastname: Kusano
authors.forename: M
authors.initials: M
authors.lastname: Shimada
authors.forename: S
authors.initials: S
authors.lastname: Kimura
authors.forename: T
authors.initials: T
authors.lastname: Fukumoto
mesh_terms: D000273:Adipose Tissue / Q000473:pathology*; D000328:Adult; D000368:Aged; D000818:Animals; D004938:Esophageal Neoplasms / Q000401:mortality / Q000473:pathology* / Q000601:surgery; D016629:Esophagectomy; D005260:Female; D006801:Humans; D008197:Lymph Node Excision; D008198:Lymph Nodes / Q000473:pathology*; D008207:Lymphatic Metastasis; D008297:Male; D008479:Mediastinal Neoplasms / Q000556:secondary; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D009360:Neoplastic Cells, Circulating; D015996:Survival Rate