Percutaneous transhepatic cholangioscopy-assisted procedures for the management of postoperative benign bilioenteric anastomotic strictures with or without biliary stones

Table 2 Characteristics of benign biliary anastomotic stricture in 40 patients after Roux-en-Y bilioenterostomy, n (%)

Characteristics	n (%)
Location of BBAS1
Common bile duct	4 (10.0)
Common hepatic duct	19 (47.5)
Hilar bifurcation	15 (37.5)
RHD and LHD	2 (5.0)
Severity of BBAS
Mild	10 (25.0)
Moderate	11 (27.5)
Severe2	19 (47.5)
Length of BBAS (mm)
≤ 5	20 (76.9)
6-9	6 (23.1)
≥ 10	0 (0.0)
Complexity of BBAS
Simple	32 (80.0)
Complex3	8 (20.0)
Strictures opposite of PTBD	4 (10.0)

¹Two or more strictures existed in different locations in some cases.

²In 19 cases of severe benign bilioenteric anastomotic stricture, including the presence of a pinhole-like stricture (n = 4), sharp angulation and/or looping stricture (n = 2), and complete occlusion (n = 2).

³The complex strictures were located in the left hepatic duct (n = 4), left intrahepatic duct (n = 1), right hepatic duct (n = 1), right intrahepatic duct (n = 1), and both left hepatic duct and right intrahepatic duct (n = 1).

BBAS: Benign bilioenteric anastomotic stricture; RHD: Right hepatic duct; LHD: Left hepatic duct; PTBD: Percutaneous transhepatic biliary drainage.