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MR imaging of acute pancreatitis: correlation of abdominal wall edema with severity scores
Ru Yang1, Zong Lin Jing, Xiao Ming Zhang
1Sichuan Key laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong 637000, China. yangru0904@163.com
Objective:
To study MRI findings of abdominal wall edema (AWE) in acute pancreatitis as well as correlations between AWE and the severity of acute pancreatitis according to the MR severity index (MRSI) and the Acute Physiology And Chronic Healthy Evaluation III (APACHE III) scoring system.
Materials And Methods:
A total of 160 patients with AP admitted to our institution between December 2009 and March 2011 were included in this study. MRI was performed within 48 h after admission. MRI findings of acute pancreatitis were noted, including AWE on the MRI. The abdominal wall area was divided into quarters, and each area involved was recorded as 1 point to score the severity of AWE. The severity of acute pancreatitis was studied using both the MRSI and the APACHE III scoring system. Spearman correlation of AWE with the MRSI and the APACHE III scoring system was analyzed.
Results:
In 160 patients with acute pancreatitis, 53.8% had AWE on MRI. The average AWE score was 1.2±1.4 points. The prevalence of AWE was 30.5%, 64.5% and 100% in mild, moderate and severe AP, respectively, according to MRSI. AWE on MRI was correlated with MRSI scores (r=0.441, p=0.000). According to APACHE III scores, the averages were 2.0±1.1 and 2.6±1.1 points in mild AP and severe AP, respectively (P=0.016). AWE was slightly correlated with the APACHE III scores (r=0.222, p=0.005).
Conclusion:
AWE on MRI in acute pancreatitis is common, which may be a supplementary indicator in determining the severity of AP.
Insights
Abdominal wall edema (AWE) on MRI is common in acute pancreatitis. This finding correlates with disease severity, suggesting AWE can be a supplementary indicator for assessing acute pancreatitis.
Area of Science:
- Radiology
- Gastroenterology
- Medical Imaging
Background:
- Acute pancreatitis (AP) is a significant cause of morbidity and mortality.
- Accurate assessment of AP severity is crucial for timely and appropriate management.
- Magnetic Resonance Imaging (MRI) is a valuable tool for evaluating AP complications.
Purpose of the Study:
- To investigate the prevalence and characteristics of abdominal wall edema (AWE) on MRI in patients with acute pancreatitis.
- To assess the correlation between AWE and the severity of acute pancreatitis using established scoring systems.
- To determine if AWE can serve as a supplementary indicator for AP severity.
Main Methods:
- A retrospective analysis of 160 patients with AP who underwent MRI within 48 hours of admission.
- MRI findings were evaluated for the presence and extent of AWE, with a scoring system based on affected abdominal wall quadrants.
- Disease severity was assessed using the MR Severity Index (MRSI) and the APACHE III scoring system.
- Spearman correlation analysis was performed to evaluate the relationship between AWE scores and MRSI/APACHE III scores.
Main Results:
- Abdominal wall edema (AWE) was detected on MRI in 53.8% of patients with acute pancreatitis.
- The prevalence of AWE increased with AP severity, observed in 30.5% of mild, 64.5% of moderate, and 100% of severe cases according to MRSI.
- AWE demonstrated a significant correlation with MRSI scores (r=0.441, p=0.000) and a slight correlation with APACHE III scores (r=0.222, p=0.005).
Conclusions:
- Abdominal wall edema (AWE) on MRI is a frequent finding in patients with acute pancreatitis.
- The presence and severity of AWE correlate with the overall severity of acute pancreatitis.
- AWE on MRI may serve as a useful supplementary imaging biomarker for assessing AP severity.
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