Surgical treatment of biliary ductal stricture complicating localized left hepatolithiasis

Table 1 The occurrence rate of each hepatic duct stricture

Location	n	Mild stricture (%)al	Severe stricture (%)a2	Total (%)
Left hepatic duct	112	26 (23.2)	41 (36.6)	67 (59.8)
Left medial hepatic duct	33	9 (27.3)	19 (42.4)	28 (84.8)b
Left external hepatic duct	75	29 (38.7)	34 (45.3)	63 (84.0)d

Mild or severe stricture refers to a stricture with a diameter > or ≤ respectively half of the greatest diameter of the dilated ducts proximal to the stricture. ^a1χ² = 5.26, P > 0.05;

^a2χ² = 4.90, P > 0.05, among 3 groups.

^bχ² = 6.00, P < 0.01;

^dχ² = 11.82, P < 0.01, vs left hepatic duct.