OBJECTIVES: This work aimed to study the early predictive value of extrapancreatic inflammation on magnetic resonance imaging (EPIM) for acute pancreatitis (AP) severity. METHODS: The EPIM score, magnetic resonance severity index, Acute Physiology and Chronic Health Evaluation (APACHE II) score, bedside index of severity in AP, and high-sensitivity C-reactive protein levels were evaluated for 337 AP patients. The extrapancreatic inflammation on computed tomography (EPIC) was also assessed for 86 patients undergoing computed tomography. The predictive values of these scores for severe AP and organ failure were evaluated using receiver operating characteristic curve analyses. RESULTS: Of the 337 AP patients, 55 (16.3%) had organ failure and 17 (5.0%) had severe AP. The EPIM showed a strong correlation with the EPIC (r = 0.794, P < 0.001) and had a higher correlation with the APACHE II and hospital stay compared with the EPIC. The accuracy of the EPIM in predicting severe AP and organ failure (areas under the curve, 0.844 and 0.817) was consistent with that of the APACHE II and bedside index of severity in AP, and higher than that of the magnetic resonance severity index. CONCLUSION: The EPIM is more helpful in assessing AP severity than the EPIC and can indicate the occurrence of severe AP and organ failure early.
OBJECTIVES: This work aimed to study the early predictive value of extrapancreatic inflammation on magnetic resonance imaging (EPIM) for acute pancreatitis (AP) severity. METHODS: The EPIM score, magnetic resonance severity index, Acute Physiology and Chronic Health Evaluation (APACHE II) score, bedside index of severity in AP, and high-sensitivity C-reactive protein levels were evaluated for 337 AP patients. The extrapancreatic inflammation on computed tomography (EPIC) was also assessed for 86 patients undergoing computed tomography. The predictive values of these scores for severe AP and organ failure were evaluated using receiver operating characteristic curve analyses. RESULTS: Of the 337 AP patients, 55 (16.3%) had organ failure and 17 (5.0%) had severe AP. The EPIM showed a strong correlation with the EPIC (r = 0.794, P < 0.001) and had a higher correlation with the APACHE II and hospital stay compared with the EPIC. The accuracy of the EPIM in predicting severe AP and organ failure (areas under the curve, 0.844 and 0.817) was consistent with that of the APACHE II and bedside index of severity in AP, and higher than that of the magnetic resonance severity index. CONCLUSION: The EPIM is more helpful in assessing AP severity than the EPIC and can indicate the occurrence of severe AP and organ failure early.