Major hepatectomy using the glissonean approach in cases of right umbilical portion

Table 1 The reported patients with right umbilical portion who underwent hepatectomy in the English-language literature

Ref.	Age (yr)	Sex	Disease	Surgical procedure	Type of intrahepatic portal venous branching
Uesaka et al[8]	53	Male	Liver metastasis of bile duct cancer	Right hepatectomy	Trifurcation type
Idu et al[9]	Unknown	Male	Perihilar cholangiocarcinoma	Left hepatectomy	Unknown
Nagai et al[1]	67	Male	Bile duct cancer	Right anterior sectionectomy, segmentectomy 1 and pancreatoduodenectomy	Trifurcation type
Nagai et al[1]	67	Male	Hepatocellular carcinoma	Segmentectomy 8, and partial resection of segment 1	Trifurcation type
Asonuma et al[3]	48	Male	Living donor	Left lateral sectionectomy	Unknown
Asonuma et al[3]	29	Male	Living donor	Left lateral sectionectomy	Unknown
Asonuma et al[3]	35	Female	Living donor	Left lateral sectionectomy	Bifurcation type
Kaneoka et al[10]	53	Male	Perihilar cholangiocellular carcinoma	Left hepatectomy and segmentectomy 1 with extrahepatic bile duct resection	Trifurcation type
Kaneoka et al[10]	61	Male	Extrahepatic bile duct cholangiocarcinoma	Left hepatectomy, segmentectomy 1, and pylorous-preserving pancreaticduodenectomy	Trifurcation type
Tashiro et al[11]	53	Male	Hepatocellular carcinoma	Partial hepatectomy	Trifurcation type
Hwang et al[12]	18	Male	Living donor	Right hepatectomy	Bifurcation type
Hwang et al[12]	24	Unknown	Living donor	Right posterior sectionectomy	Trifurcation type
Hwang et al[12]	39	Unknown	Living donor	Left hepatectomy leaving S4a	Bifurcation type
Hsu et al[6]	Unknown	Unknown	Hepatocellular carcinoma	Right hepatectomy	Trifurcation type
Hsu et al[6]	Unknown	Unknown	Hepatocellular carcinoma	Partial resection of left lateral section	Trifurcation type
Hsu et al[6]	Unknown	Unknown	Hepatocellular carcinoma	Left lateral sectionectomy	Bifurcation type
Abe et al[13]	70	Female	Liver metastasis of uterine cervical cancer	Right hepatectomy with extrahepatic bile duct resection	Bifurcation type
Sakaguchi et al[14]	76	Male	Liver metastasis of rectal cancer	Right posterior sectionectomy and partial resection of segment 1 and right anterior section	Trifurcation type
Almodhaiberi et al[15]	67	Male	Perihilar cholangiocarcinoma	Extended left lateral sectionectomy and segmentectomy 1 with extrahepatic bile duct resection	Trifurcation type
Case 1	70	Male	Intrahepatic cholangiocarcinoma	Right anterior sectionectomy	Trifurcation type
Case 2	70	Female	Perihilar cholangiocarcinoma	Left trisectionectomy with extrahepatic bile duct resection	Trifurcation type