title: Preoperative positron emission tomography with fluorine-18-fluorodeoxyglucose is predictive of prognosis in patients with hepatocellular carcinoma after resection.
abstract: BACKGROUND
  Hepatocellular carcinomas (HCCs) accumulate fluorine-18 fluorodeoxyglucose (FDG) to various degrees. The standardized uptake values (SUVs) of FDG-positron emission tomography (PET) in high-grade HCCs are significantly higher than those in low-grade HCCs.
  
  
  OBJECTIVE
  The aim of this study was to evaluate the possible usefulness of FDG-PET in predicting the prognosis of HCC patients after resection. We analyzed the relationship between the tumor to non-tumor SUV ratios (SUV ratio) and surgical outcome in 31 patients.
  
  
  RESULTS
  Of the 31 cases of HCC studied, seven (23%) exhibited SUV ratios greater than 2, as the cutoff value. The percentage of patients with poorly differentiated HCC was greater in the higher SUV ratio group (SUV ratio >2) than in the lower SUV ratio group (SUV ratio <2) (57 vs. 32%). The overall survival was significantly longer in the lower SUV ratio group than in the higher SUV ratio group (5-year-survival rate: 63 vs. 29% P = 0.006) (median survival time: 2310 vs.182 days).
  
  
  CONCLUSIONS
  The SUV ratio was related significantly to disease-related death as well as other predictive factors, including the number of tumors, the size, stage, and involvement of vessels, and the involvement of the capsule. Consequently, we conclude that the SUV ratio provides information of prognostic relevance in patients with HCC before surgery.
authors.affiliation: Department of Gastroenterological Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan. etsu@kuhp.kyoto-u.ac.jp
authors.forename: Etsuro
authors.initials: E
authors.lastname: Hatano
authors.forename: Iwao
authors.initials: I
authors.lastname: Ikai
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Higashi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Teramukai
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Torizuka
authors.forename: Tsuneo
authors.initials: T
authors.lastname: Saga
authors.forename: Hideaki
authors.initials: H
authors.lastname: Fujii
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Shimahara
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000401:mortality* / Q000601:surgery*; D005260:Female; D019788:Fluorodeoxyglucose F18; D006801:Humans; D008113:Liver Neoplasms / Q000401:mortality* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D049268:Positron-Emission Tomography; D011379:Prognosis; D019275:Radiopharmaceuticals; D012189:Retrospective Studies
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18