. 2020 May 11;20:405. doi: 10.1186/s12885-020-06895-1

Table 1.

Resectability classification of localized perihilar cholangiocarcinoma from surgical points of view

Resectability	Biliary factor		Vascular factor
Resectable (R)	Curative resection can be obtained by either side of right or left TSN or less hepatectomy	and	Combined VR with reconstruction of PV and/or HA is not required regardless of vascular invasion
Borderline Resectable (BR)	Curative resection can be obtained by either side of right or left TSN or less hepatectomy	and	Combined VR with safe reconstruction of PV and/or HA can be performed
Locally advanced (LA)	Curative resection cannot be obtained even by either side of right or left TSN	and/or	Combined VR with safe reconstruction of PV and/or HA cannot be performed

Resectability

Biliary factor

Vascular factor

Resectable (R)

Curative resection can be obtained by either side of right or left TSN or less hepatectomy

and

Combined VR with reconstruction of PV and/or HA is not required regardless of vascular invasion

Borderline

Resectable (BR)

Curative resection can be obtained by either side of right or left TSN or less hepatectomy

and

Combined VR with safe reconstruction of PV and/or HA can be performed

Locally advanced (LA)

Curative resection cannot be obtained even by either side of right or left TSN

and/or

Combined VR with safe reconstruction of PV and/or HA cannot be performed

TSN trisectionectomy, VR vascular resection, PV portal vein, HA hepatic artery