title: True left-sided gallbladder with variations of bile duct and cholecystic vein.
abstract: A left-sided gallbladder without a right-sided round ligament, which is called a true left-sided gallbladder, is extremely rare. A 71-year-old woman was referred to our hospital due to a gallbladder polyp. Computed tomography (CT) revealed not only a gallbladder polyp but also the gallbladder located to the left of the round ligament connected to the left umbilical portion. CT portography revealed that the main portal vein diverged into the right posterior portal vein and the common trunk of the left portal vein and right anterior portal vein. CT cholangiography revealed that the infraportal bile duct of segment 2 joined the common bile duct. Laparoscopic cholecystectomy was performed for a gallbladder polyp, and the intraoperative finding showed that the cholecystic veins joined the round ligament. A true left-sided gallbladder is closely associated with several anomalies; therefore, surgeons encountering a true left-sided gallbladder should be aware of the potential for these anomalies.
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Ishii
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Akinori
authors.initials: A
authors.lastname: Noguchi
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Mie
authors.initials: M
authors.lastname: Onishi
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Takao
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Maruyama
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Taiyoh
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Yasunobu
authors.initials: Y
authors.lastname: Araki
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Shimizu
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Izumi
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Tani
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Masahide
authors.initials: M
authors.lastname: Yamaguchi
authors.affiliation: Hiromichi Ishii, Akinori Noguchi, Mie Onishi, Koji Takao, Takahiro Maruyama, Hiroaki Taiyoh, Yasunobu Araki, Takeshi Shimizu, Hiroyuki Izumi, Naoki Tani, Masahide Yamaguchi, Tetsuro Yamane, Department of Surgery, Matsushita Memorial Hospital, Osaka 570-8540, Japan.
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Yamane
mesh_terms: D000368:Aged; D001652:Bile Ducts / Q000002:abnormalities*; D002758:Cholangiography / Q000379:methods; D017081:Cholecystectomy, Laparoscopic; D005260:Female; D005704:Gallbladder / Q000002:abnormalities*; D005705:Gallbladder Diseases / Q000150:complications* / Q000000981:diagnostic imaging; D006801:Humans; D033162:Incidental Findings; D010690:Phlebography / Q000379:methods; D011127:Polyps / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery; D011169:Portal Vein / Q000002:abnormalities* / Q000000981:diagnostic imaging; D011172:Portography / Q000379:methods; D014057:Tomography, X-Ray Computed
keywords: Anomaly of the cholecystic vein; Anomaly of the portal vein; Infraportal bile duct of segment 2; Laparoscopic cholecystectomy; True left-sided gallbladder