Successful management of aberrant right hepatic duct during laparoscopic cholecystectomy: a rare case report oleh Keisuke Oyama, Shin Nakahira, Hisataka Ogawa, Kazuya Kato, Makoto Hasegawa, Takayuki To, Ryosuke Maki, Hoshi Himura, Hidemi Nishi, Nobuyoshi Ohhara, Jota Mikami, Yoichi Makari, Ken Nakata, Masaki Tsujie, Junya Fujita