title: 2-Fluoro-2-deoxy-D-glucose positron emission tomography imaging is predictive of pathologic response and survival after preoperative chemoradiation in patients with esophageal carcinoma.
abstract: BACKGROUND
  The current study was performed to assess the value of 2-fluoro-2-deoxy-d-glucose positron emission tomography (FDG-PET) in predicting the pathologic response and survival of patients with esophageal carcinoma treated with preoperative chemoradiation (CRT) and tumor resection. Preliminary reports suggest that FDG-PET may be predictive of the response of esophageal carcinoma patients to preoperative CRT.
  
  
  METHODS
  Eighty-three patients with resectable esophageal carcinoma who underwent preoperative CRT and FDG-PET and tumor resection were evaluated for pathologic response to CRT, percent residual tumor, and survival.
  
  
  RESULTS
  The majority of patients in the current study were men (74 of 83 patients; 89%). Most tumors were adenocarcinomas (73 of 83 tumors; 88%) and clinical (EUS)T3/4 (69 tumors; 83%) or N1 (46 tumors; 55%). FDG-PET after preoperative CRT identified pathologic responders but failed to rule out microscopic residual tumor in 13 of 73 cases (18%). Pathologic response was found to correlate with the post-CRT FDG-PET standardized uptake value (SUV) (P = 0.03) and a post-CRT FDG-PET SUV of or 4 was found to be the only preoperative factor to correlate with decreased survival (2-year survival rate of 33% vs. 60%; P = 0.01). On univariate Cox regression analysis, only post-CRT FDG-PET was found to be correlated with post-CRT survival (P = 0.04).
  
  
  CONCLUSIONS
  Post-CRT FDG-PET was found to be predictive of pathologic response and survival in patients with esophageal carcinoma who undergo preoperative CRT. Esophagectomy should still be considered even if the post-CRT FDG-PET scan is normal because microscopic residual disease cannot be ruled out.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA. sswisher@mdanderson.org
authors.forename: Stephen G
authors.initials: SG
authors.lastname: Swisher
authors.forename: Jeremy
authors.initials: J
authors.lastname: Erasmus
authors.forename: Mary
authors.initials: M
authors.lastname: Maish
authors.forename: Arlene M
authors.initials: AM
authors.lastname: Correa
authors.forename: Homer
authors.initials: H
authors.lastname: Macapinlac
authors.forename: Jaffer A
authors.initials: JA
authors.lastname: Ajani
authors.forename: James D
authors.initials: JD
authors.lastname: Cox
authors.forename: Ritsuko R
authors.initials: RR
authors.lastname: Komaki
authors.forename: David
authors.initials: D
authors.lastname: Hong
authors.forename: Hoon K
authors.initials: HK
authors.lastname: Lee
authors.forename: Joe B
authors.initials: JB
authors.lastname: Putnam
authors.forename: David C
authors.initials: DC
authors.lastname: Rice
authors.forename: W Roy
authors.initials: WR
authors.lastname: Smythe
authors.forename: Linh
authors.initials: L
authors.lastname: Thai
authors.forename: Ara A
authors.initials: AA
authors.lastname: Vaporciyan
authors.forename: Garrett L
authors.initials: GL
authors.lastname: Walsh
authors.forename: Tsung-Teh
authors.initials: TT
authors.lastname: Wu
authors.forename: Jack A
authors.initials: JA
authors.lastname: Roth
mesh_terms: D000230:Adenocarcinoma / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D000328:Adult; D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D003131:Combined Modality Therapy; D004938:Esophageal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011237:Predictive Value of Tests; D011300:Preoperative Care; D011379:Prognosis; D019275:Radiopharmaceuticals; D012074:Remission Induction; D012189:Retrospective Studies; D012307:Risk Factors; D012680:Sensitivity and Specificity; D015996:Survival Rate; D014055:Tomography, Emission-Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18