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08.04.2019 | Gastrointestinal

Quantitative contrast-enhanced US helps differentiating neoplastic vs non-neoplastic gallbladder polyps

verfasst von: Jae Seok Bae, Se Hyung Kim, Hyo-jin Kang, Haeryoung Kim, Ji Kon Ryu, Jin-Young Jang, Sang Hyub Lee, Woo Hyun Paik, Wooil Kwon, Jae Young Lee, Joon Koo Han

Erschienen in: European Radiology | Ausgabe 7/2019

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Abstract

Objectives

To differentiate between large (≥ 1 cm in diameter) gallbladder (GB) non-neoplastic and neoplastic polyps using quantitative analysis of contrast-enhanced ultrasound (CEUS) findings.

Methods

From September 2017 to May 2018, 29 patients (10 males; median age, 63 years) with GB polyps of ≥ 1 cm in diameter who were undergoing cholecystectomy were consecutively enrolled. All patients underwent preoperative conventional US and CEUS examinations. Quantitative analysis of CEUS findings using time-intensity curves between the two groups was independently performed by two radiologists. The interobserver agreement for the quantitative analysis of the CEUS results was measured using the intraclass correlation coefficient. Receiver operating characteristic analysis was performed to evaluate the diagnostic performance of CEUS examination.

Results

After the cholecystectomy, the patients were classified into the non-neoplastic polyp group (n = 12) and the neoplastic polyp group (n = 17) according to the pathological results. The interobserver agreement for quantitative assessment between the two radiologists was near perfect to substantial. Quantitative assessment of the CEUS findings revealed that the rise time, mean transit time, time to peak, and fall time of non-neoplastic GB polyps were significantly shorter than those of neoplastic polyps (p < 0.001, p = 0.008, p = 0.013, and p = 0.002, respectively). The sensitivity and specificity of the quantitative CEUS parameters for the differentiation between the two groups were 76.5–100% and 75%, respectively, with an area under the curve of 0.765–0.887.

Conclusions

Quantitative analysis of CEUS findings could be valuable in differentiating GB neoplastic polyps from non-neoplastic polyps.

Key Points

• Quantitative analysis of CEUS findings could be valuable in differentiating gallbladder neoplastic polyps from non-neoplastic polyps.

• Quantitative analysis of CEUS findings in gallbladder polyps provides cut-off values for differentiation between neoplastic polyps and non-neoplastic polyps with near-perfect to substantial interobserver agreement.

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Titel: Quantitative contrast-enhanced US helps differentiating neoplastic vs non-neoplastic gallbladder polyps
verfasst von: Jae Seok Bae
Se Hyung Kim
Hyo-jin Kang
Haeryoung Kim
Ji Kon Ryu
Jin-Young Jang
Sang Hyub Lee
Woo Hyun Paik
Wooil Kwon
Jae Young Lee
Joon Koo Han
Publikationsdatum: 08.04.2019
Verlag: Springer Berlin Heidelberg
Erschienen in: European Radiology / Ausgabe 7/2019
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-019-06123-w

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Quantitative contrast-enhanced US helps differentiating neoplastic vs non-neoplastic gallbladder polyps

Abstract

Objectives

Methods

Results

Conclusions

Key Points

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Abstract

Objectives

Methods

Results

Conclusions

Key Points

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