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

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)715-719
Number of pages5
JournalJournal of Gastroenterology and Hepatology (Australia)
Volume13
Issue number7
DOIs
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Hepatology
  • Gastroenterology

Fingerprint Dive into the research topics of 'Intraductal ultrasonography for the diagnosis of proximal invasion in extrahepatic bile duct cancer'. Together they form a unique fingerprint.

  • Cite this