良性与恶性软组织肿块：鉴别诊断的磁共振成像标准
Benign and malignant soft tissue mass: magnetic resonance imaging criteria for discrimination.
作者信息
Kalayanarooj Siripan
机构信息
Department of Radiology, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok, Thailand.
出版信息
J Med Assoc Thai. 2008 Jan;91(1):74-81.
OBJECTIVE
Determine MRI features to differentiate between benign and malignant lesions.
MATERIAL AND METHOD
The Magnetic resonance imaging (MRI) taken in the 5-year period (2003-2007) of 85 patients with benign and malignant soft tissue masses were analyzed. The criteria for discrimination were based on size, origin, signal homogeneity on T1- and T2-weighted, perilesional edema or invasion, hemorrhage, necrosis, and bone and neurovascular involvements.
RESULT
There were 50 benign and 35 malignant lesions. Eighty-two lesions had histologic proof while three lesions had MRI characteristics of benign lipoma.
CONCLUSION
No single MRI feature was diagnostic for any soft tissue tumors in the present study. However, three individual MRI features were statistically significant for differentiation between benign and malignant soft tissue masses (p < 0.05). The features that favor malignancy were heterogeneous signal on T2-weighted, perilesional edema or invasion, and necrosis in the masses.
目的
确定用于鉴别良性和恶性病变的MRI特征。
材料与方法
分析了85例患有良性和恶性软组织肿块的患者在5年期间（2003 - 2007年）所进行的磁共振成像（MRI）检查结果。鉴别标准基于大小、起源、T1加权和T2加权上的信号均匀性、病灶周围水肿或浸润、出血、坏死以及骨骼和神经血管受累情况。
结果
有50个良性病变和35个恶性病变。82个病变有组织学证据，而3个病变具有良性脂肪瘤的MRI特征。
结论
在本研究中，没有单一的MRI特征可用于诊断任何软组织肿瘤。然而，有三个独立的MRI特征在鉴别良性和恶性软组织肿块方面具有统计学意义（p < 0.05）。提示为恶性的特征包括T2加权上信号不均匀、病灶周围水肿或浸润以及肿块内坏死。
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