Patterns of failure after resection of extrahepatic bile duct cancer: implications for adjuvant radiotherapy indication and treatment volumes

Table 5 Studies on adjuvant radiotherapy in extrahepatic bile duct cancer cases and their treatment volumes

Study	Location	Adjuvant RT volume
Robert et al. [13]	AOV	TB + porta hepatis, PP, celiac, SM, PA (T11/12 – L2/3) nodes
Sikora et al. [10]	AOV	TB + porta hepatis nodes
Brian et al. [15]	EHBD	TB + porta hepatis, pericholedochal, PD, celiac nodes
Ha et al. [19]	EHBD	TB + porta hepatis, PD, celiac nodes
Michael et al. [12]	DBD	TB + primary node stations + PA (T10/11 – L2/3) nodes
Takeshi et al. [20]	PH	TB + porta hepatis, hepatic artery nodes
Ben-Josef et al. [21]	EHBD	TB + porta hepatis, retroPD, celiac nodes
Our study	EHBD	TB + LN station of No. 8, 9, 12, 14, and 16a2

RT radiotherapy, AOV ampulla of Vater, EHBD extrahepatic bile duct, DBD distal bile duct, PH perihilar, TB tumor bed, PP peripancreatic, SM superior mesenteric, PA paraaortic, PD pancreaticoduodenal, LN lymph node