Intrahepatic peripheral cholangiocarcinoma: Two-phased dynamic incremental ct and pathologic correlation

Hiroshi Honda, Hideo Onitsuka, Koutarou Yasumori, Takamoto Hayashi, Kouichirou Ochiai, Masaki Gibo, Eisuke Adachi, Takashi Matsumata, Kouji Masuda

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Abstract

To elucidate the characteristic CT findings of intrahepatic peripheral cholangiocarcinoma, two-phased dynamic incremental CT scans of 20 cholan- giocarcinomas in 16 patients were carefully analyzed. Dynamic incremental CT scanning was performed after intravenous administration of 100 ml iodinated contrast medium at a rate of 2 ml/s using a power injector. The CT scans (8-16 sections) were obtained during 45-110 s (early phase) and 6-7 min (delayed phase) after commencement of the injection of the contrast medium. On CT, 55% (11 of 20) of intrahepatic peripheral cholangiocarcinomas appeared hypo- dense in both phases. Most of the tumors (80%) appeared hypodense in the early phase and had increased CT numbers in their delayed images. Lymph- adenopathy was observed in 69% (11 of 16) of patients whose main tumors exceeded 3 cm in diameter. All tumors appeared irregular or indistinct. Twenty percent (4 of 20) of the cholangiocarcinomas were difficult to distinguish from hepatocellular carcinomas or hemangiomas.

Original languageEnglish
Pages (from-to)397-402
Number of pages6
JournalJournal of Computer Assisted Tomography
Volume17
Issue number3
DOIs
Publication statusPublished - Jan 1 1993

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All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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