多探测器计算机断层扫描和MRI在肠系膜淋巴结病评估中的作用

Eman Elmitwally, M. Omar, A. Abdelrahman
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引用次数: 0

摘要

背景:计算机断层扫描(CT)和磁共振成像(MRI)通常用于肠系膜淋巴结(LN)的评估,基于许多标准,如形态、分布和增强模式,可以给出潜在病理的指示。本研究的目的是评估多层CT和MRI在肠系膜淋巴结病的检测和表征中的作用。患者和方法本前瞻性研究共纳入30例肠系膜LNs患者。年龄25 ~ 75岁,平均年龄±SD为52.5±15.3岁。共16例患者行CT检查,10例患者行MRI检查,4例患者同时行CT和MRI检查。所有患者在纳入研究前均给予知情的书面同意。收集影像学和组织病理学结果并进行统计学分析。结果我们发现多探测器计算机断层扫描鉴别良恶性LNs的准确率为75%,敏感性为71.4%,特异性为76.9%。弥散加权mri鉴别良恶性病灶的准确率为85.7%,敏感性为83.3%,特异性为87.5%。恶性肠系膜LNs的平均表观扩散系数(ADC)值(0.73±0.18×10−3 mm2/s)明显低于良性LNs的平均ADC值(1.38±0.28×10−3 mm2/s),判断病变良恶性的ADC阈值为0.94×10−3 mm2/s。结论CT和MRI对肠系膜LN的鉴别诊断有重要作用,有助于肠系膜LN良恶性的鉴别。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The role of multidetector computed tomography and MRI in assessment of mesenteric lymphadenopathy
Background Computed tomography (CT) and MRI are usually used for mesenteric lymph node (LN) evaluation, based on many criteria such as the morphology, distribution, and enhancement pattern that may give an indication of the underlying pathology. The aim of this work was to evaluate the role of multidetector CT and MRI in detection and characterization of mesenteric lymphadenopathy. Patients and methods This prospective study included a total of 30 patients with mesenteric LNs. Their age ranging from 25 to 75 years old with mean age±SD was 52.5±15.3 years. In total, 16 patients underwent CT examination, 10 patients underwent MRI examination, and four patients underwent both CT and MRI examinations. All patients gave their informed written consent before inclusion in the study. The radiological and histopathological results were collected and then statistically analyzed. Results We found that multidetector computed tomography accuracy in differentiating benign from malignant LNs was 75% with a sensitivity of 71.4% and specificity of 76.9%. Diffusion-weighted-MRI was more accurate (85.7%) in differentiating benign from malignant LNs with a sensitivity of 83.3% and specificity of 87.5%. The mean apparent diffusion coefficient (ADC) value of the malignant mesenteric LNs (0.73±0.18×10−3 mm2/s) was significantly lower than the mean ADC value of benign LNs (1.38±0.28×10−3 mm2/s) and the ADC threshold value to determine whether the lesions were benign or malignant was 0.94×10−3 mm2/s). Conclusion Both CT and MRI have a great role in characterization of mesenteric LN, which helps in differentiation between benign and malignant mesenteric LNs.
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