title: Long-term follow-up and characteristics of cancer negative cases after endoscopic resection and gastrectomy for early gastric cancer.
abstract: BACKGROUND
  Endoscopic resection (ER) and gastrectomy are widely used for early gastric cancer (EGC). However, unexpected cases, which show no cancer after treatment, have occurred. The present study was designed to characterize cancer negative cases after ER and gastrectomy, and determine their long term prognosis.
  
  
  METHODS
  Patients with EGC who underwent ER from January 2004 to October 2012 and gastrectomy from January 2000 to December 2007 were analyzed.
  
  
  RESULTS
  There were 13 CFG from 1508 EGC cases after ER (0.9%) and 13 CFG from 4,101 gastrectomy (0.3%), respectively. The tumor size of the CFG group after ER was smaller than the control group (median value of tumor area of CFG vs. control groups, 48.0 mm2 vs. 146.0 mm2, respectively, P = 0.008). However, the CFG group, after gastrectomy, showed marginal differences in size and biopsy number when compared with the control group. There was no mortality in the all CFG.
  
  
  CONCLUSIONS
  The small diameter and area of EGC are factors which determine if the lesion can be completely removed by forcep biopsy. A final pathology report of “No cancer was detected” after ER and surgery of EGC is not detrimental to the patient.
authors.forename: Sangheun
authors.initials: S
authors.lastname: Lee
authors.forename: Jun Chul
authors.initials: JC
authors.lastname: Park
authors.forename: Hyuk
authors.initials: H
authors.lastname: Lee
authors.forename: Yong Chan
authors.initials: YC
authors.lastname: Lee
authors.forename: Sung Kwan
authors.initials: SK
authors.lastname: Shin
authors.forename: Woo Jin
authors.initials: WJ
authors.lastname: Hyung
authors.forename: Hoon
authors.initials: H
authors.lastname: Noh
authors.forename: Choong Bai
authors.initials: CB
authors.lastname: Kim
authors.forename: Hyun Ki
authors.initials: HK
authors.lastname: Kim
authors.forename: Dae Ryong
authors.initials: DR
authors.lastname: Kang
authors.forename: Sang Kil
authors.initials: SK
authors.lastname: Lee
mesh_terms: D000368:Aged; D001706:Biopsy; D055088:Early Detection of Cancer; D005260:Female; D005743:Gastrectomy / Q000009:adverse effects / Q000379:methods*; D005773:Gastroscopy / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000473:pathology / Q000601:surgery*; D013997:Time Factors; D016896:Treatment Outcome; D047368:Tumor Burden