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Related Experiment Video

Updated: Jan 18, 2026

Isolation of Proximal Fluids to Investigate the Tumor Microenvironment of Pancreatic Adenocarcinoma
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Development and validation of a nomogram model based on ultrasound and contrast-enhanced ultrasound features for

Hua Liang1, Yang Gui1, Xueqi Chen1

  • 1Department of Ultrasound, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

Abdominal Radiology (New York)
|May 31, 2025
PubMed
Summary

Ultrasound (US) and contrast-enhanced ultrasound (CEUS) effectively differentiate mass-forming pancreatitis (MFP) from pancreatic ductal adenocarcinoma (PDAC). A combined US+CEUS model using specific imaging features showed high accuracy in distinguishing these conditions.

Keywords:
Cohort studyContrast-enhanced ultrasoundMass-forming pancreatitisPancreatic ductal adenocarcinomaUltrasound

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Area of Science:

  • Medical Imaging
  • Gastroenterology
  • Oncology

Background:

  • Mass-forming pancreatitis (MFP) and pancreatic ductal adenocarcinoma (PDAC) present similar imaging features, complicating diagnosis.
  • Accurate differentiation is crucial for appropriate patient management and treatment strategies.

Purpose of the Study:

  • To evaluate the diagnostic value of ultrasound (US) and contrast-enhanced ultrasound (CEUS) in differentiating MFP from PDAC.
  • To develop and validate nomogram models for improved diagnostic accuracy.

Main Methods:

  • Retrospective analysis of 281 patients who underwent pancreatic CEUS.
  • Logistic regression identified independent predictive imaging features (taller-than-wide shape, calcification, washout pattern).
  • Two nomogram models (US-only and US+CEUS) were constructed and validated.

Main Results:

  • The US+CEUS model demonstrated superior performance compared to the US-only model.
  • Key predictors identified were taller-than-wide shape, calcification, and washout pattern.
  • The combined model achieved high diagnostic accuracy (AUC training: 0.930, AUC validation: 0.914) with good calibration and clinical utility.

Conclusions:

  • A nomogram model incorporating taller-than-wide shape, calcification, and washout pattern effectively differentiates PDAC from MFP.
  • The US+CEUS model offers excellent discriminative ability, accuracy, and clinical utility for diagnosing pancreatic lesions.