Hepatic metastases from colorectal cancer: Detection and false-positive findings with helical CT during arterial portography

Philippe Soyer, David A. Bluemke, Ralph H. Hruban, James V. Sitzmann, Elliot K. Fishman

Research output: Contribution to journalArticlepeer-review

Abstract

PURPOSE: To determine the sensitivity and false-positive rate of helical computed tomography during arterial portography (CTAP) in the detection of hepatic metastases from colorectal cancer. MATERIALS AND METHODS: Preoperative helical CTAP was performed to examine 23 patients (10 men and 13 women, aged 43-77 years [mean, 63 years]) who later underwent surgical tumor resection. Imaging findings were retrospectively reviewed by two radiologists and were correlated with intraoperative and histologic findings. RESULTS: Helical CTAP demonstrated 33 of 35 metastases, with diameters of 4-95 mm, that were identified in resected specimens (sensitivity, 94%). The two metastases not demonstrated were 4 and 5 mm in diameter. Five false-positive lesions were found in four patients, yielding a false-positive rate of 17% by patient analysis and 13% by lesion analysis. CONCLUSION: The sensitivity of helical CTAP in the preoperative detection of hepatic metastases is high, and its false-positive rate compares favorably with that of conventional CTAP, but future comparative studies are needed to determine which is the better modality.

Original languageEnglish (US)
Pages (from-to)71-74
Number of pages4
JournalRadiology
Volume193
Issue number1
DOIs
StatePublished - Oct 1994

Keywords

  • Computed tomography (CT), helical technology
  • Liver neoplasms, diagnosis
  • Portography

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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