Clinical Significances of Preoperative Classification of Intrahepatic Cholangiocarcinoma: Different Characteristics of Perihilar vs. Peripheral ICC

The aim of this study was to evaluate the clinical significance of preoperative classification of intrahepatic cholangiocarcinoma (ICC) into perihilar and peripheral types using dynamic computed tomography (CT). A retrospective cohort study was performed to analyze the differences in clinical charac...

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Bibliographic Details
Published in:Anticancer research 2016-12, Vol.36 (12), p.6563-6570
Main Authors: Yamashita, Yo-Ichi, Wang, Huanlin, Kurihara, Takeshi, Tsujita, Eiji, Nishie, Akihiro, Imai, Katsunori, Hashimoto, Daisuke, Chikamoto, Akira, Aishima, Shinichi, Baba, Hideo
Format: Article
Language:English
Subjects:
Aged
Bile Duct Neoplasms - classification
Bile Duct Neoplasms - diagnostic imaging
Bile Duct Neoplasms - pathology
Cholangiocarcinoma - classification
Cholangiocarcinoma - diagnostic imaging
Cholangiocarcinoma - pathology
Female
Humans
Male
Middle Aged
Retrospective Studies
Tomography, X-Ray Computed
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Summary:The aim of this study was to evaluate the clinical significance of preoperative classification of intrahepatic cholangiocarcinoma (ICC) into perihilar and peripheral types using dynamic computed tomography (CT). A retrospective cohort study was performed to analyze the differences in clinical characteristics between perihilar and peripheral ICC samples from patients between 1990-2014. A total of 87 patients were divided into three ICC subtypes; perihilar (n=34), peripheral (n=44), and unclassifiable ICC (n=9). The positive rates of pathological lymphatic infiltration (ly) (p=0.02) and perineural invasion (pn) (p3 nodules) was significantly higher in perihilar ICC (p=0.0135). In perihilar ICC, the local tumor invasions such as ly and pn were more frequent. Therefore, it is important in such cases to attempt to achieve a sufficient tumor margin. Systemic recurrences were more frequent in perihilar ICC, so perioperative chemotherapy should be conducted as well.
ISSN:0250-7005
1791-7530
DOI:10.21873/anticanres.11260