title: A study of contractility of proximal surgical margin in esophageal cancer.
abstract: BACKGROUND
  The marginal length from main tumor in esophageal cancer is aconsiderable issue regarding surgical management and adjuvant treatment; so we decided to study the contractility effect on the proximal surgical margin after immersing it in10% buffered formalin as a fixative.
  
  
  METHODS
  The proximal marginal length of ten sequential patients with esophageal cancer who underwent transhiatal esophagectomy were studied, on the operating table as fresh specimens, immediately after resection, and next 24, 48 and 72 hours after immersing in 10% buffered formalin.
  
  
  RESULTS
  The contraction continued through the day 3, the mean contractility after one day was about 27%, after two days was 33% and after three days was 38%.
  
  
  CONCLUSIONS
  This study shows how the proximal esophageal margin can vary by the time, after immersing in 10% buffered formalin and should be considered in every settings and reporting documents by pathologists.
authors.affiliation: Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran ; Dept. of General and Vascular Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Jalaluddin
authors.initials: J
authors.lastname: Khoshnevis
authors.affiliation: Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Afshin
authors.initials: A
authors.lastname: Moradi
authors.affiliation: Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran ; Dept. of Health and Social Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Eznollah
authors.initials: E
authors.lastname: Azargashb
authors.affiliation: Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran ; Dept. of General and Vascular Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Barmak
authors.initials: B
authors.lastname: Gholizade
authors.affiliation: Cancer Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran ; Dept. of General and Vascular Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Mohammad Reza
authors.initials: MR
authors.lastname: Sobhiyeh
keywords: Contractility; Esophageal cancer; Marginal safety