Abstract
Objectives
We evaluated the usefulness of real-time colour Doppler flow (CDF) endoscopic ultrasonography (EUS) for differentiating neoplastic gallbladder (GB) polyps from non-neoplastic polyps.
Methods
Between August 2014 and December 2016, a total of 233 patients with GB polyps who underwent real-time CDF-EUS were consecutively enrolled in this prospective study. CDF imaging was subjectively categorized for each patient as: strong CDF pattern, weak CDF pattern and no CDF pattern.
Results
Of the 233 patients, 115 underwent surgical resection. Of these, there were 90 cases of non-neoplastic GB polyps and 23 cases of neoplastic GB polyps. In a multivariate analysis, a strong CDF pattern was the most significant predictive factor for neoplastic polyps; sensitivity, specificity, positive predictive value, negative predictive value and accuracy were 52.2 %, 79.4 %, 38.7 %, 86.9 % and 73.9 %, respectively. Solitary polyp and polyp size were associated with an increased risk of neoplasm.
Conclusions
The presence of a strong CDF pattern as well as solitary and larger polyps on EUS may be predictive of neoplastic GB polyps. As real-time CDF-EUS poses no danger to the patient and requires no additional equipment, it is likely to become a supplemental tool for the differential diagnosis of GB polyps.
Key points
• Differential diagnosis between neoplastic polyps and non-neoplastic polyps of GB is limited.
• The use of real-time CDF-EUS was convenient, with high agreement between operators.
• The real-time CDF-EUS is helpful in differential diagnosis of GB polyps.
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Abbreviations
- CDF:
-
Colour Doppler flow
- CEH-EUS:
-
Contrast-enhanced harmonic EUS
- CI:
-
Confidence interval
- EUS:
-
Endoscopic ultrasonography
- GB:
-
Gallbladder
- NPV:
-
Negative predictive value
- OR:
-
Odds ratio
- PPV:
-
Positive predictive value
- SD:
-
Standard deviation
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The scientific guarantor of this publication is Dong Kyun Park
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The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
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Written informed consent was obtained from all subjects (patients) in this study.
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Institutional Review Board approval was obtained.
Methodology
• prospective
• diagnostic or prognostic study
• performed at one institution
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Kim, S.Y., Cho, J.H., Kim, E.J. et al. The efficacy of real-time colour Doppler flow imaging on endoscopic ultrasonography for differential diagnosis between neoplastic and non-neoplastic gallbladder polyps. Eur Radiol 28, 1994–2002 (2018). https://doi.org/10.1007/s00330-017-5175-3
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DOI: https://doi.org/10.1007/s00330-017-5175-3