Table 2.

Identification of biliary structures before and after Calot’s dissection

Vascular structure	Ishizawa et al[14]		Osayi et al[18]		Spinoglio et al[23]		Buchs et al[22]		Weighted average, % (95%CI)
	n/total	%	n/total	%	n/total	%	n/total	%
Before dissection of Calot’s triangle
CD	52/52	100.0	46/82	56.1	42/45	93.3	11/12	91.7	79.1 (74.0-84.1)
CHD	50/52	96.1	29/82	35.4	40/45	88.8	4/12	33.3	64.4 (59.0-69.8)
CBD	-	-	31/82	37.8	41/45	91.1	6/12	50.0	56.1 (48.9-63.3)
CD-CHD junction	50/52	96.1	20/82	24.4	40/45	88.8	3/12	25.0	59.1 (54.1-64.1)
After dissection of Calot’s triangle
CD	52/52	100.0	78/82	95.1	44/45	97.7	12/12	100.0	97.4 (94.9-99.8)
CHD	52/52	100.0	57/82	69.5	44/45	97.7	8/12	66.6	84.3 (79.6-89.0)
CBD	-	-	63/82	76.8	44/45	97.7	10/12	83.3	84.1 (78.3-90.0)
CD-CHD junction	52/52	100.0	63/82	76.8	44/45	97.7	7/12	58.3	86.9 (82.5-91.3)

CD: Cystic duct; CHD: Common hepatic duct; CBD: Common biliary duct.