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Spread of gallbladder carcinoma: CT evaluation with pathologic correlation

T Ohtani1, Y Shirai, K Tsukada

  • 1Department of Surgery, Niigata University School of Medicine, 1-757 Asahimachi-dori, Niigata 951, Japan.

Abdominal Imaging
|May 1, 1996
PubMed
Summary

Computed tomographic (CT) imaging shows limited accuracy in detecting gallbladder carcinoma spread. However, CT is valuable for assessing resectability and treatment planning in advanced cases due to its high positive predictive value.

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Area of Science:

  • Radiology
  • Oncology
  • Surgical Pathology

Background:

  • Gallbladder carcinoma staging relies on accurate detection of tumor spread.
  • Computed tomographic (CT) imaging is a key modality for evaluating abdominal malignancies.

Purpose of the Study:

  • To evaluate the diagnostic accuracy of CT in detecting the spread and determining the stage of gallbladder carcinoma.
  • To correlate CT findings with pathological outcomes in patients undergoing surgery.

Main Methods:

  • Retrospective analysis of CT scans from 59 Japanese patients with gallbladder carcinoma who underwent radical surgery.
  • Comparison of CT findings with histopathological results to assess accuracy.

Main Results:

  • CT demonstrated low sensitivity (36-47%) for nodal involvement (N1/N2) but high positive predictive values (92-94%).

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  • CT showed variable sensitivity (50-100%) for direct spread to liver, bile ducts, and gastrointestinal tract/pancreas, with high positive predictive values (77-100%).
  • CT detected liver metastases with 75% sensitivity and 100% positive predictive value but struggled with omental and peritoneal spread.

    • Conclusions:

    • CT imaging has moderate sensitivity for detecting gallbladder carcinoma spread.
    • Despite sensitivity limitations, CT's high positive predictive value aids in assessing resectability and treatment planning, particularly for advanced stages.