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Table 1 Patient Characteristics

From: The safety and efficacy of percutaneous intraductal radiofrequency ablation in unresectable malignant biliary obstruction: A single-institution experience

Category Subcategory Number (%)
Total   50
Median age(range), yr.   61.8(41–85)
Sex
  Male 36(72)
Female 14(28)
Type of tumor
  Pancreatic carcinoma 10(20)
Gallbladder carcinoma 4(8)
Cholangiocarcinoma 25(50)
Hepatocelluar carcinoma 6(12)
Lymph node metastases 5(10)
Level of biliary obstruction*
  Common bile or hepatic duct (type I) 11(22)
Type II 8(16)
Type III A 10(20)
Type III B 4(8)
Intrahepatic (type IV) 17(34)
Performance status score
  0 10(20)
1 20(40)
2 18(36)
Previously cholangitis   22(44)
Distant Metastasis   29(58)
No. of interventions, mean (range)   1.2(1–3)
Subsequent chemotherapy   7(14)
  1. Note. — Unless otherwise indicated, data are number of patients and data in parentheses are percentages
  2. *According to the Bismuth classification of perihilar cholangiocarcinoma