Sichuan Key Laboratory of Medical Imaging, Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, PR China.
PLoS One. 2014 Apr 4;9(4):e93687. doi: 10.1371/journal.pone.0093687. eCollection 2014.
To study the MRI findings of the normal transverse mesocolon and the involvement of the mesocolon in acute pancreatitis (AP) as well as the relationship between the involvement of the mesocolon and the severity of AP.
Forty patients without pancreatic disorders were retrospectively analyzed to observe the normal transverse mesocolon using MRI; 210 patients with AP confirmed by clinical and laboratory tests were retrospectively analyzed using MRI to observe transverse-mesocolon involvement (TMI). The severity of TMI was recorded as zero points (no abnormalities and transverse-mesocolon vessel involvement), one point (linear and patchy signal in the transverse mesocolon) or two points (transverse-mesocolon effusion). The AP severity was graded by the MRI severity index (MRSI) and the Acute Physiology And Chronic Healthy Evaluation II (APACHE II) scoring system. The correlations of TMI with MRSI and APACHE-II were analyzed.
In a normal transverse mesocolon, the display rates of the middle colic artery, the middle colic vein and the gastrocolic trunk on MRI were 95.0%, 82.5% and 100.0%, respectively. Of the 210 patients with AP, 130 patients (61.9%) had TMI. According to the TMI grading, 40%, 39% and 20% of the patients were graded at zero, one and two points, respectively. TMI was strongly correlated with the MRSI score (r = 0.759, P = 0.000) and the APACHE-II score (r = 0.384, P = 0.000).
MRI could be used to visualize transverse-mesocolon involvement. The severity of TMI could reflect that of AP in the clinical setting and imaging. TMI might be a supplementary indicator of the severity of AP.
研究正常横结肠系膜的 MRI 表现及横结肠系膜在急性胰腺炎（AP）中的受累情况，以及横结肠系膜受累与 AP 严重程度的关系。
回顾性分析 40 例无胰腺疾病的患者的 MRI 横结肠系膜表现；回顾性分析 210 例经临床和实验室检查证实的 AP 患者的 MRI 横结肠系膜受累情况（TMI）。TMI 严重程度记录为 0 分（无异常和横结肠系膜血管受累）、1 分（横结肠系膜线性和斑片状信号）或 2 分（横结肠系膜积液）。AP 严重程度采用 MRI 严重程度指数（MRSI）和急性生理学和慢性健康评估 II（APACHE II）评分系统进行分级。分析 TMI 与 MRSI 和 APACHE-II 的相关性。
正常横结肠系膜中，MRI 显示中结肠动脉、中结肠静脉和胃结肠干的显示率分别为 95.0%、82.5%和 100.0%。210 例 AP 患者中，130 例（61.9%）有 TMI。根据 TMI 分级，40%、39%和 20%的患者分别为 0 分、1 分和 2 分。TMI 与 MRSI 评分呈强相关（r=0.759，P=0.000），与 APACHE-II 评分呈中度相关（r=0.384，P=0.000）。
MRI 可用于显示横结肠系膜受累情况。TMI 的严重程度可以反映临床和影像学中 AP 的严重程度。TMI 可能是 AP 严重程度的补充指标。
