Table 1.

Synchronous double primary cancers of the extrahepatic bile duct without pancreatobiliary maljunction.

Authors [ref.]	Year	Patient age (years)	Sex	Tumor location	Histology	Clinical symptoms	Prognosis
Ogawa [2]	2001	69	Male	1.Middle	1.Poor	Abdominal distension	unkonwn
				2.Distal	2.Moderate
Bedoui [3]	2011	67	Female	1.Middle	1.None	Abdominal pain and jaundice	unkonwn
				2.Distal	2.None
Sumiyoshi [4]	2012	78	Male	1.CHD	1.None	Abdominal pain and jaundice	31 months
				2.Distal	2.None
Yoo [5]	2015	67	Male	1.CHD	1.Squamous	Jaundice	8 moths
				2.Distal	2.Moderate
Present study	2017	78	Female	1.Middle	1.Well to moderate	Jaundice	18 months
				2.Distal	2.poor

CHD; common hepatic duct.