Ultrasound surveillance for early detection of hepatocellular carcinoma among patients with chronic hepatitis C

Takahisa Sato, Ryosuke Tateishi, Haruhiko Yoshida, Takamasa Ohki, Ryota Masuzaki, Jun Imamura, Tadashi Goto, Fumihiko Kanai, Shuntaro Obi, Naoya Kato, Shuichiro Shiina, Takao Kawabe, Masao Omata

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

Background and aims: Ultrasonography is the most frequently used modality in surveillance for HCC among patients with chronic hepatitis C. However, the optimal surveillance interval is still controversial and the usefulness of supplementary tumor marker determination has not been confirmed. Methods: A total of 243 cases of naive HCC were detected among 1,431 patients with chronic hepatitis C under outpatient-based surveillance. The mode of HCC detection, including ultrasound surveillance interval, was retrospectively examined and the relation between the interval and detected tumor size was analyzed. Tumor volume doubling time was estimated from exponential increase in serum tumor marker levels when applicable. Results: HCC was first detected by ultrasonography in 221 patients. Ultrasound surveillance interval, ranging between 2 and 8 months, was not correlated with the size of tumor at detection. Patients with cirrhosis were likely to be surveyed at shorter intervals. The size of tumor exceeded 30 mm only in three (1.4%) cases. They were all positive for a biomarker and the estimated tumor doubling time was short. In 14 cases, HCC was first detected by CT indicated by abnormal rise in tumor marker levels despite negative ultrasound findings. In the remaining eight cases, ultrasonography had been replaced by CT as surveillance modality because of excessive obesity or coarseness of liver parenchyma. Conclusions: Ultrasound surveillance at 6-month intervals was appropriate in general for the detection of HCC at a size smaller than 30 mm. However, in patient with established cirrhosis, more frequent screening would be needed to detect tumors of the same size.

Original languageEnglish
Pages (from-to)544-550
Number of pages7
JournalHepatology International
Volume3
Issue number4
DOIs
Publication statusPublished - Dec 2009
Externally publishedYes

Keywords

  • Doubling time
  • Hepatitis C
  • Hepatocellular carcinoma
  • Size of tumor
  • Surveillance
  • Surveillance interval
  • Tumor marker
  • Ultrasound

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