Role of intratumoral flow void signs in the differential diagnosis of intracranial solitary fibrous tumors and meningiomas

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• 作者：Chunhong Wang ; Yikai Xu ; ^{yikai.xu@163.com" class="auth_mail" title="E-mail the corresponding author} ; Xiang Xiao ; Jing Zhang ; Fang Zhou ; Xixi Zhao
• 关键词：Magnetic resonance imaging ; Flow void sign ; Solitary fibrous tumor ; Meningioma
• 刊名：Journal of Neuroradiology
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：43
• 期：5
• 页码：325-330
• 全文大小：1307 K

文摘

An absence of signal on magnetic resonance (MR) images caused by blood or cerebral spinal fluid flow is known as a flow void, and may be related to intracranial tumors such as intracranial solitary fibrous tumor (SFT) or meningioma. However, the differential diagnosis of these neoplasms based on flow void configuration is controversial. This study investigated common intratumoral flow void patterns for differentiating intracranial SFT from meningioma.

Methods

From May 2008 to May 2015, 14 patients (10 men, 4 women; 14–63 y) received a pathologic diagnosis of primary intracranial SFT, and in 85 patients (23 men, 62 women; 20–76 y) a pathologic diagnosis of meningioma was made. Intratumoral flow void signs were retrospectively observed on MR images of all these patients and classified by radiologists blinded to the pathology findings. Statistical significance was established by chi-squared tests.

Results

In intracranial SFT patients, the sunburst flow void was detected in 1 case (7.1%) and the serpentine in 13 cases (92.9%). In meningioma patients, the sunburst flow void was detected in 82 cases (96.5%) and the serpentine in 3 cases (3.5%). The differences in the prevalence of the flow void types between the 2 groups were significant (χ² = 64.348; P < 0.01).

Conclusion

Intracranial SFTs on MR images were more likely to show a serpentine than a sunburst flow void, while the sunburst pattern was far more typical of meningioma. Thus, the pattern of the intratumoral flow void sign may be a useful tool to assist in differentiating these tumors.