Comparative analysis of ERCP, IDUS, EUS and CT in predicting malignant bile duct strictures

Table 1 Baseline characteristics of the patient cohort n (%)

Variable	Value
Patients, n	234
Median age, yr (IQR)	64 (54-73)
Age range, yr	20-90
Sex (M/F)	127/107
ERCP + IDUS performed, n	234
ETP performed	194 (83)
EUS performed, n	234
CT performed, n	234
Median follow-up, mo (IQR)	34 (19-52)
Follow-up range, mo	12-100
Procedures, n
Clinical follow-up	50
Surgery	161
Palliative therapy	23
Localization of stricture (CBD)
Proximal third	28 (12)
Middle third	21 (9)
Distal third	185 (79)
Final diagnosis (n)
Benign disease	98
Normal bile duct	10
Papillitis	15
Ampullary adenoma	8
Cholangitis	10
PSC	3
Mirizzi syndrome	3
Choledocholithiasis	2
Pancreatitis	39
Pseudocyst	2
Choledochal adenofibroma	1
IPMN	2
Choledochal cyst	1
Pancreatic cystadenoma	1
Caroli’s syndrome	1
Malignant disease	136
Cholangiocarcinoma	56
Pancreatic carcinoma	55
Ampullary carcinoma	19
Gallbladder carcinoma	3
Hepatocellular carcinoma	3

IQR: Interquartile range; CBD: Common bile duct; PSC: Primary sclerosing cholangitis; M: Male; F: Female.