CC BY-NC-ND 4.0 · Endosc Int Open 2021; 09(07): E1158-E1163
DOI: 10.1055/a-1401-9962
Innovation forum

Preoperative perihilar cholangiocarcinoma assessment using virtual endoscopic imaging magnetic resonance cholangioscopy

Mitsuru Okuno
1  Department of Gastroenterology, Gifu Municipal Hospital, Gifu, Japan
,
Tsuyoshi Mukai
1  Department of Gastroenterology, Gifu Municipal Hospital, Gifu, Japan
,
Shota Iwata
1  Department of Gastroenterology, Gifu Municipal Hospital, Gifu, Japan
,
Ryuichi Tezuka
1  Department of Gastroenterology, Gifu Municipal Hospital, Gifu, Japan
,
Naoya Mita
2  First Department of Internal Medicine, Gifu University Hospital, Gifu, Japan
,
Shinya Uemura
2  First Department of Internal Medicine, Gifu University Hospital, Gifu, Japan
,
Takuji Iwashita
2  First Department of Internal Medicine, Gifu University Hospital, Gifu, Japan
,
Akinori Maruta
3  Department of Gastroenterology, Gifu Prefecture General Medical Center, Gifu, Japan
,
Keisuke Iwata
3  Department of Gastroenterology, Gifu Prefecture General Medical Center, Gifu, Japan
,
Eiichi Tomita
1  Department of Gastroenterology, Gifu Municipal Hospital, Gifu, Japan
,
Masahito Shimizu
2  First Department of Internal Medicine, Gifu University Hospital, Gifu, Japan
› Author Affiliations

Abstract

Background and study aims Preoperative assessment of the superficial ductal spread (SDS) of perihilar cholangiocarcinoma (PCCA) is important for determining its resectability. A virtual endoscopic imaging method, magnetic resonance cholangioscopy (MRCS), wherein a three-dimensional image is created from magnetic resonance imaging (MRI) data, can evaluate all aspects of arbitrary bile ducts.

Patients and methods Overall, 15 patients with PCCA who underwent preoperative MRI were enrolled. All patients underwent surgical treatment.

Results MRCS could be performed based on preoperative MRI data in all patients. MRCS could not be used in one patient due to debris in the obstructed bile duct. The remaining 14 patients (93 %) were diagnosed with obstructed bile duct or irregular surface of the bile duct, signifying tumor invasion. The accuracy rate of diagnosing the SDS was 93 % (14/15). Seven patients underwent preoperative peroral cholangioscopy; the scope could not pass through the tumor in three patients. In these three patients, MRCS was able to be use dtoevaluate the obstructed side of the bile duct and faciliated accurate diagnosis of SDS.

Conclusions MRCS can be used to noninvasively evaluate the bile duct in all directions. This novel method makes it easy to create virtual images and can be useful for diagnosing the preoperative SDS of PCCA.

Supplementary material



Publication History

Received: 02 December 2020

Accepted: 15 February 2021

Publication Date:
21 June 2021 (online)

© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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