The authors reply: Re: Yamamoto R, Sugiura T, Ashida R, Ohgi K, Yamada M, Otsuka S, and Uesaka K. Prognostic value of carbohydrate antigen 19-9 and the surgical margin in extrahepatic Cholangiocarcinoma. Ann Gastroenterol Surg . 2022;6:307-315.
Ryusei YamamotoTeiichi SugiuraRyo AshidaKatsuhisa OhgiMihoko YamadaShimpei OtsukaKatsuhiko UesakaPublished in: Annals of gastroenterological surgery (2023)
The specific growth rate of the perioperative carbohydrate antigen 19-9 values was not related to the prognosis of extrahepatic cholangiocarcinoma.
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