Accuracy of a novel noninvasive secretin-enhanced MRCP severity index scoring system for diagnosis of chronic pancreatitis: correlation with EUS-based Rosemont criteria

Abstract

Purpose

To evaluate the accuracy of a secretin-enhanced MRCP Chronic Pancreatitis Severity Index (CPSI) in the diagnosis of chronic pancreatitis (CP) based on endoscopic ultrasound (EUS) Rosemont criteria.

Methods

In this retrospective study, 31 patients (20 women; median age 48 years, range 18–77) with known/suspected CP evaluated with both EUS and secretin-enhanced MRCP were included. CP severity was graded using a ten-point-scale secretin-enhanced MRCP-based CPSI scoring system which considered ductal, parenchymal and secretin-based dynamic abnormalities. Cases were categorized as normal, mild, moderate or severe CP. Correlation between CPSI and the EUS Rosemont criteria was performed using Cohen’s kappa coefficient. Comparative evaluation of test performance was obtained using ROC analysis.

Results

Using EUS Rosemont criteria, eight patients had features consistent/suggestive of CP, 20 patients were normal and three were indeterminate. On CPSI, five patients were normal, 12 had mild and 14 had moderate/severe CP. There was only fair agreement (k = 0.272) between CPSI and Rosemont criteria categories. CPSI showed 87.5% sensitivity, 69.6% specificity and 74.2% accuracy (cutoff value = 3.5 points; area under the curve = 0.804; p = 0.0026) for CP diagnosis based on EUS Rosemont criteria.

Conclusion

CPSI showed relatively high diagnostic accuracy for diagnosis of CP based on Rosemont criteria. The CPSI scoring system can be proposed as a noninvasive alternative to the EUS Rosemont criteria for CP diagnosis.

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This research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors.

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Correspondence to Francesco Alessandrino.

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Daniel Souza, Francesco Alessandrino, Gyanprakash A. Ketwaroo, Mandeep Sawhney, Koenraad J. Mortele declare that they have no conflict of interest.

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Souza, D., Alessandrino, F., Ketwaroo, G.A. et al. Accuracy of a novel noninvasive secretin-enhanced MRCP severity index scoring system for diagnosis of chronic pancreatitis: correlation with EUS-based Rosemont criteria. Radiol med 125, 816–826 (2020). https://doi.org/10.1007/s11547-020-01181-3

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Keywords

  • Chronic pancreatitis
  • Endoscopic ultrasound
  • Magnetic resonance imaging
  • MRCP
  • Secretin