Intraductal ultrasonography for the diagnosis of proximal invasion in extrahepatic bile duct cancer

Masanori Kuroiwa, Hidemi Goto, Yoshiki Hirooka, Tuyoshi Furukawa, Tetsuo Hayakawa, Yasuo Naitoh

研究成果: Article査読

31 被引用数 (Scopus)

抄録

Intraductal ultrasonography (IDUS) was performed on 22 patients with extrahepatic bile duct cancer, using the percutaneous transhepatic approach. Intraductal ultrasonography images of the proximal invasion of the bile duct cancer were defined. In addition, three patients were examined through the peroral approach, to try to diagnose whether or not the cancer invaded to the bifurcation of the hepatic duct. Intraductal ultrasonography images obtained through the percutaneous approach could be classified into three patterns, types 1, 2 and 3, according to the features of the interior surface of the bile duct and the thickness of the bile duct wall. Type 1 images, which did not show protrusions into the bile duct lumen and had a bile duct wall of even thickness, were not likely to show bile duct cancer. Type 2 images showed protrusions of the tumour into the bile duct lumen and the surfaces of the protrusions were irregular. Type 3 images showed single or multiple low echoic papillary masses in the bile duct. Using the peroral technique, we considered all three cases to be type 1 and could diagnose that cancer had not invaded to the bifurcation of the hepatic ducts. From the results of this study, we suggest that proximal invasion of extrahepatic bile duct cancer can be diagnosed using IDUS.

本文言語English
ページ(範囲)715-719
ページ数5
ジャーナルJournal of Gastroenterology and Hepatology (Australia)
13
7
DOI
出版ステータスPublished - 1998
外部発表はい

All Science Journal Classification (ASJC) codes

  • Hepatology
  • Gastroenterology

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