Prognostic significance of contrast-enhanced CT attenuation value in extrahepatic cholangiocarcinoma

Yoshiki Asayama, Akihiro Nishie, Kousei Ishigami, Yasuhiro Ushijima, Yukihisa Takayama, Daisuke Okamoto, Nobuhiro Fujita, Takao Ohtsuka, Tomoharu Yoshizumi, Shinichi Aishima, Yoshinao Oda, Hiroshi Honda

研究成果: ジャーナルへの寄稿記事

2 引用 (Scopus)

抄録

Objectives: To determine whether washout characteristics of dynamic contrast-enhanced computed tomography (CT) could predict survival in patients with extrahepatic cholangiocarcinoma (EHC). Methods: This study collected 46 resected cases. All cases were examined by dynamic contrast study on multidetector-row CT. Region-of-interest measurements were obtained at the non-enhanced, portal venous phase and delayed phase in the tumour and were used to calculate the washout ratio as follows: [(attenuation value at portal venous phase CT − attenuation value at delayed enhanced CT)/(attenuation value at portal venous phase CT − attenuation value at unenhanced CT)] × 100. On the basis of the median washout ratio, we classified the cases into two groups, a high-washout group and low-washout group. Associations between overall survival and various factors including washout rates were analysed. Results: The median washout ratio was 29.4 %. Univariate analysis revealed that a lower washout ratio, venous invasion, lymphatic permeation and lymph node metastasis were associated with shorter survival. Multivariate analysis identified the lower washout ratio as an independent prognostic factor (hazard ratio, 3.768; p value, 0.027). Conclusions: The washout ratio obtained from the contrast-enhanced CT may be a useful imaging biomarker for the prediction of survival of patients with EHC. Key points: • Dynamic contrast study can evaluate the aggressiveness of extrahepatic cholangiocarcinoma. • A lower washout ratio was an independent prognostic factor for overall survival. • CT can predict survival and inform decisions on surgical options or chemotherapy.

元の言語英語
ページ(範囲)2563-2569
ページ数7
ジャーナルEuropean Radiology
27
発行部数6
DOI
出版物ステータス出版済み - 6 1 2017

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Cholangiocarcinoma
Tomography
Survival
Multidetector Computed Tomography
Multivariate Analysis
Biomarkers
Lymph Nodes
Neoplasm Metastasis
Drug Therapy
Neoplasms

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

これを引用

Prognostic significance of contrast-enhanced CT attenuation value in extrahepatic cholangiocarcinoma. / Asayama, Yoshiki; Nishie, Akihiro; Ishigami, Kousei; Ushijima, Yasuhiro; Takayama, Yukihisa; Okamoto, Daisuke; Fujita, Nobuhiro; Ohtsuka, Takao; Yoshizumi, Tomoharu; Aishima, Shinichi; Oda, Yoshinao; Honda, Hiroshi.

:: European Radiology, 巻 27, 番号 6, 01.06.2017, p. 2563-2569.

研究成果: ジャーナルへの寄稿記事

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title = "Prognostic significance of contrast-enhanced CT attenuation value in extrahepatic cholangiocarcinoma",
abstract = "Objectives: To determine whether washout characteristics of dynamic contrast-enhanced computed tomography (CT) could predict survival in patients with extrahepatic cholangiocarcinoma (EHC). Methods: This study collected 46 resected cases. All cases were examined by dynamic contrast study on multidetector-row CT. Region-of-interest measurements were obtained at the non-enhanced, portal venous phase and delayed phase in the tumour and were used to calculate the washout ratio as follows: [(attenuation value at portal venous phase CT − attenuation value at delayed enhanced CT)/(attenuation value at portal venous phase CT − attenuation value at unenhanced CT)] × 100. On the basis of the median washout ratio, we classified the cases into two groups, a high-washout group and low-washout group. Associations between overall survival and various factors including washout rates were analysed. Results: The median washout ratio was 29.4 {\%}. Univariate analysis revealed that a lower washout ratio, venous invasion, lymphatic permeation and lymph node metastasis were associated with shorter survival. Multivariate analysis identified the lower washout ratio as an independent prognostic factor (hazard ratio, 3.768; p value, 0.027). Conclusions: The washout ratio obtained from the contrast-enhanced CT may be a useful imaging biomarker for the prediction of survival of patients with EHC. Key points: • Dynamic contrast study can evaluate the aggressiveness of extrahepatic cholangiocarcinoma. • A lower washout ratio was an independent prognostic factor for overall survival. • CT can predict survival and inform decisions on surgical options or chemotherapy.",
author = "Yoshiki Asayama and Akihiro Nishie and Kousei Ishigami and Yasuhiro Ushijima and Yukihisa Takayama and Daisuke Okamoto and Nobuhiro Fujita and Takao Ohtsuka and Tomoharu Yoshizumi and Shinichi Aishima and Yoshinao Oda and Hiroshi Honda",
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T1 - Prognostic significance of contrast-enhanced CT attenuation value in extrahepatic cholangiocarcinoma

AU - Asayama, Yoshiki

AU - Nishie, Akihiro

AU - Ishigami, Kousei

AU - Ushijima, Yasuhiro

AU - Takayama, Yukihisa

AU - Okamoto, Daisuke

AU - Fujita, Nobuhiro

AU - Ohtsuka, Takao

AU - Yoshizumi, Tomoharu

AU - Aishima, Shinichi

AU - Oda, Yoshinao

AU - Honda, Hiroshi

PY - 2017/6/1

Y1 - 2017/6/1

N2 - Objectives: To determine whether washout characteristics of dynamic contrast-enhanced computed tomography (CT) could predict survival in patients with extrahepatic cholangiocarcinoma (EHC). Methods: This study collected 46 resected cases. All cases were examined by dynamic contrast study on multidetector-row CT. Region-of-interest measurements were obtained at the non-enhanced, portal venous phase and delayed phase in the tumour and were used to calculate the washout ratio as follows: [(attenuation value at portal venous phase CT − attenuation value at delayed enhanced CT)/(attenuation value at portal venous phase CT − attenuation value at unenhanced CT)] × 100. On the basis of the median washout ratio, we classified the cases into two groups, a high-washout group and low-washout group. Associations between overall survival and various factors including washout rates were analysed. Results: The median washout ratio was 29.4 %. Univariate analysis revealed that a lower washout ratio, venous invasion, lymphatic permeation and lymph node metastasis were associated with shorter survival. Multivariate analysis identified the lower washout ratio as an independent prognostic factor (hazard ratio, 3.768; p value, 0.027). Conclusions: The washout ratio obtained from the contrast-enhanced CT may be a useful imaging biomarker for the prediction of survival of patients with EHC. Key points: • Dynamic contrast study can evaluate the aggressiveness of extrahepatic cholangiocarcinoma. • A lower washout ratio was an independent prognostic factor for overall survival. • CT can predict survival and inform decisions on surgical options or chemotherapy.

AB - Objectives: To determine whether washout characteristics of dynamic contrast-enhanced computed tomography (CT) could predict survival in patients with extrahepatic cholangiocarcinoma (EHC). Methods: This study collected 46 resected cases. All cases were examined by dynamic contrast study on multidetector-row CT. Region-of-interest measurements were obtained at the non-enhanced, portal venous phase and delayed phase in the tumour and were used to calculate the washout ratio as follows: [(attenuation value at portal venous phase CT − attenuation value at delayed enhanced CT)/(attenuation value at portal venous phase CT − attenuation value at unenhanced CT)] × 100. On the basis of the median washout ratio, we classified the cases into two groups, a high-washout group and low-washout group. Associations between overall survival and various factors including washout rates were analysed. Results: The median washout ratio was 29.4 %. Univariate analysis revealed that a lower washout ratio, venous invasion, lymphatic permeation and lymph node metastasis were associated with shorter survival. Multivariate analysis identified the lower washout ratio as an independent prognostic factor (hazard ratio, 3.768; p value, 0.027). Conclusions: The washout ratio obtained from the contrast-enhanced CT may be a useful imaging biomarker for the prediction of survival of patients with EHC. Key points: • Dynamic contrast study can evaluate the aggressiveness of extrahepatic cholangiocarcinoma. • A lower washout ratio was an independent prognostic factor for overall survival. • CT can predict survival and inform decisions on surgical options or chemotherapy.

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JO - European Radiology

JF - European Radiology

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