Journal List > Korean J Gastroenterol > v.62(4) > 1007146

Lee, Kim, Yim, Shin, Yu, Ju, Park, Park, Cho, Sohn, Jeon, and Kim: Primary Tumor Maximum Standardized Uptake Value Measured on18 F-Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography Is a Prognostic Value for Survival in Bile Duct and Gallbladder Cancer

Abstract

Background/Aims

Few studies have assessed the prognostic value of the primary tumor maximum standardized uptake value (SUVmax) measured by 2-[18 F]-fluoro-2-deoxy-D-glucose PET-CT for patients with bile duct and gallbladder cancer.

Methods

A retrospective analysis of 61 patients with confirmed bile duct and gallbladder cancer who underwent FDG PET-CT in Kangbuk Samsung Medical Center (Seoul, Korea) from April 2008 to April 2011. Prognostic significance of SUVmax and other clinicopathological variables was assessed.

Results

Twenty-three patients were diagnosed as common bile duct cancer, 17 as hilar bile duct cancer, 12 as intrahepatic bile duct cancer, and nine as gallbladder cancer. In univariate analysis, diagnosis of intrahepatic cholangiocarcinoma and gallbladder cancer, mass forming type, poorly differentiated cell type, nonsurgical treatment, advanced American Joint Committee on Cancer (AJCC) staging and primary tumor SUVmax were significant predictors of poor overall survival. In multivariate analysis adjusted for age and sex, primary tumor SUVmax (hazard ratio [HR], 4.526; 95% CI, 1.813–11.299), advanced AJCC staging (HR, 4.843; 95% CI, 1.760–13.328), and nonsurgical treatment (HR, 6.029; 95% CI, 1.989–18.271) were independently associated with poor overall survival.

Conclusions

Primary tumor SUVmax measured by FDG PET-CT is an independent and significant prognostic factor for overall survival in bile duct and gallbladder cancer.

References

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Fig. 1.
Univariate analysis of the patient population, tumor characteristics, and overall survival. Kaplan-Meier survival curves with log rank comparisons between each group of final diagnosis (A), morphological type (B), histologic grade (C), treatment method (D), American Joint Committee on Cancer stage (E) and primary tumor standardized uptake value (SUVmax) (F). Log rank p-values were <0.05 for each comparison, respectively.
kjg-62-227f1.tif
Fig. 2.
Axial FDG PET-CT images of two patients with common bile duct cancer who received nonsurgical treatment. Primary tumor maximum standardized uptake value is 3.1 (arrow) in 69-year-old man who was alive 26 months after diagnosis (A), and 9.9 (arrow) in 76-year-old man who died 10 months after diagnosis (B), respectively.
kjg-62-227f2.tif
Table 1.
Baseline Clinicopathologic Characteristics of the Patients
Characteristic Data
Total number 61 (100.0)
Age (yr) 68.5±8.9
Gender (male) 32 (52.5)
Final diagnosis  
  CBDC 23 (37.7)
  Hilar 17 (27.9)
  IBDC 12 (19.7)
  GBC 9 (14.8)
Morphologic type  
  Mass forming 31 (50.8)
  Periductal infiltrating 30 (49.2)
  Intraductal growing 0 (0)
Tumor differentiation  
  Well differentiated 16 (45.7)
  Moderately differentiated 13 (37.1)
  Poorly differentiated 6 (17.1)
AJCC stage  
  Early (I/II) 49 (80.3)
  Advanced (III/IV) 12 (19.7)
Primary tumor size (cm) 4.3±3.1
Diagnostic sensitivity of FDG PET-CT 51 (83.6)
SUVmax of primary tumor 6.4±4.6
Cholangitis 7 (11.5)

Values are presented as mean±SD or n (%).

CBDC, common bile duct cancer; IBDC, intrahepatic bile duct cancer; GBC, gallbladder cancer; AJCC, American Joint Committee on Cancer; FDG PET-CT, 2-[18 F]-fluoro-2-deoxy-D-glucose PET-CT; SUVmax, maximum standardized uptake value.

Table 2.
Cox Proportional Hazard Regression Analysis of Factors Associated with Overall Survival of Bile Duct and Gallbladder Cancer
Factor Patient (n) Unadjusted
Adjusteda
HR 95% CI p-value HR 95% CI p-value
Primary tumor SUVmax              
  <5.5 32 1     1    
  ≥5.5  29 3.927 1.968–7.836 <0.001 4.526 1.813–11.299 0.001
AJCC stage              
  Early (I/II) 49 1     1    
  Advanced (III/IV) 12 10.646 4.428–25.596 <0.001 4.843 1.760–13.328 0.002
Treatment              
  Surgical 14 1     1    
  Nonsurgical 47 4.053 1.559–10.537 0.004 6.029 1.989–18.271 0.001
Morphology              
  Mass forming 31 1     1    
  Periductal infiltrating 30 0.418 0.217–0.803 0.009 0.828 0.335–2.050 0.684
Age (yr)              
  ≥65 41 1     1    
  <65 20 0.544 0.262–1.128 0.102 1.017 0.976–1.061 0.417
Sex              
  Male 32 1     1    
  Female 29 1.424 0.744–2.726 0.286 1.19 0.566–2.504 0.646
Diagnosis              
  CBDC 23 1          
  Hilar 17 2.159 0.889–5.242 0.089      
  IBDC 12 6.354 2.520–16.019 <0.001      
  GBC 9 4.153 1.585–10.883 0.004      
Histology              
  Well 16 1          
  Moderate 13 2.651 0.979–7.182 0.055      
  Poor 6 27.532 6.494–116.730 <0.001      

HR, hazard ratio; SUVmax, maximum standardized uptake value; AJCC, American Joint Committee on Cancer; CBDC, common bile duct cancer; IBDC, intrahepatic bile duct cancer; GBC, gallbladder cancer.

a Multivariate analysis.

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