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Abdominal Imaging

, Volume 24, Issue 4, pp 392–397 | Cite as

Well-differentiated hepatocellular carcinoma: findings of US, CT, and MR imaging

  • S. Monzawa
  • K. Omata
  • N. Shimazu
  • A. Yagawa
  • K. Hosoda
  • T. Araki

Abstract

Background: To elucidate the imaging characteristics of well-differentiated hepatocellular carcinomas (HCCs) on ultrasonography (US), computed tomography (CT), and magnetic resonance (MR) imaging.

Methods: Ultrasonograms, CTs, and MR images of 18 histopathologically proven well-differentiated HCCs in 15 patients were reviewed. The findings of these images were correlated with histopathologic findings.

Results: On US, seven tumors were depicted as a hyperechoic area and eight as a hypoechoic area. Three tumors were not visualized. On precontrast CT, four tumors were depicted as a low-density area, but 14 were not visualized. On conventional contrast-enhanced CT, 12 tumors were depicted as a low-density area but six were not visualized. On T1-weighted MR images, 10 tumors had high signal intensity and two had low signal intensity. Six tumors were not visualized. On T2-weighted MR images, five tumors had high signal intensity and two had low signal intensity. Eleven tumors were not visualized. Tumors with fatty change and/or clear cell formation were frequently hyperechoic on US and hyperintense on T1-weighted MR images.

Conclusions: Well-differentiated HCCs show different findings on US, CT, and MR imaging. Therefore, reliable diagnosis of well-differentiated HCCs by these imaging techniques may be difficult.

Key words: Ultrasonography (US)—Computed tomography (CT)—Magnetic resonance (MR)—US, liver neoplasm—CT, liver neoplasm—MR, liver neoplasm. 

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Copyright information

© Springer-Verlag New York Inc. 1999

Authors and Affiliations

  • S. Monzawa
    • 1
  • K. Omata
    • 2
  • N. Shimazu
    • 1
  • A. Yagawa
    • 3
  • K. Hosoda
    • 4
  • T. Araki
    • 5
  1. 1.Department of Radiology, Yamanashi Hospital, Asahi 3-8-31 Kofu, Yamanashi 400-0025, Japan,JP
  2. 2.Department of Pathology, Yamanashi Hospital, Asahi 3-8-31 Kofu, Yamanashi 400-0025, Japan,JP
  3. 3.Department of Surgery, Yamanashi Hospital, Asahi 3-8-31 Kofu, Yamanashi 400-0025, Japan,JP
  4. 4.Department of Internal Medicine, Yamanashi Hospital, Asahi 3-8-31 Kofu, Yamanashi 400-0025, Japan,JP
  5. 5.Department of Radiology, Yamanashi Medical University School of Medicine, Tamaho 1110, Nakakoma, Yamanashi 409-3821, JapanJP

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