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A comparative study of the pancreas in pediatric patients with cystic fibrosis and healthy children using two-dimensional shear wave elastography

Abstract

Purpose

To compare sonographic parameters of the pancreas between healthy children and pediatric cystic fibrosis (CF) patients with pancreatic involvement using shear wave elastography (SWE) and to investigate the efficacy of SWE in the diagnosis of pancreatic involvement in pediatric CF patients.

Methods

The pancreas was evaluated in 38 patients with CF and 38 healthy children using conventional B-mode ultrasonography (US) and two-dimensional (2D)-SWE.

Results

The pancreatic 2D-SWE values of the CF group were significantly lower than those of the healthy control group (1.01 ± 0.16 vs. 1.31 ± 0.01 m/s for the head, 1.03 ± 0.05 vs. 1.28 ± 0.08 m/s for the pancreatic body, and 1.02 ± 0.05 vs. 1.30 ± 0.10 m/s for the tail; p < 0.005 for all the comparisons). When the threshold values were obtained for the pancreatic head, body, and tail segments for the differentiation of the CF patients and healthy controls, the sensitivity of the test was determined as 81.5%, 76.3%, and 73.3%, respectively, and the specificity as 97.3%, 100%, and 100%, respectively. When the patients were divided into two groups based on the presence of B-mode US characteristics (homogeneity, sharp demarcation, and hyperechoic pancreas), there was a significant difference in the 2D-SWE values of the pancreatic head between the patients with and the patients without these characteristics (p = 0.048 for homogeneity, p = 0.021 for sharp demarcation, and p = 0.006 for hyperechoic pancreas).

Conclusion

The measurement of 2D-SWE values was found to be an easily applicable non-invasive test with high sensitivity and specificity for the demonstration of changes in the pancreas of pediatric CF patients.

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Acknowledgements

The authors thank Professor Derya Ufuk Altintas, Department of Pediatric Allergy and Immunology, Balcali Hospital, Medical Faculty Cukurova University, Adana, Turkey for her assistance in the preparation of this manuscript.

Funding

The authors received no financial support for the research, authorship, and/or publication of this article.

Author information

Correspondence to Ferhat Can Piskin.

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Conflict of interest

The authors declare no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Ethical approval

This study was conducted in accordance with the principles of the Declaration of Helsinki after obtaining the approval of the local ethics committee (No. 305201988/28).

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Written informed consent was obtained from the parents of the participants.

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Piskin, F.C., Yavuz, S., Kose, S. et al. A comparative study of the pancreas in pediatric patients with cystic fibrosis and healthy children using two-dimensional shear wave elastography. J Ultrasound (2020). https://doi.org/10.1007/s40477-020-00432-3

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Keywords

  • Shear wave elastography
  • B-mode ultrasonography
  • Cystic fibrosis
  • Pancreas
  • Children