Masuno Ryuhei, Yunaiyama Daisuke, Shishido-Hara Yukiko, Yoshimaru Daisuke, Maruyama Chifumi, Araki Yoichi, Goto Hiroshi, Nagao Toshitaka, Saito Kazuhiro
Tokyo Medical University, JP.
J Belg Soc Radiol. 2021 Mar 16;105(1):14. doi: 10.5334/jbsr.2097.
Solitary fibrous tumors (SFTs) are rare and can be misdiagnosed because of their various radiological appearances.
To clarify the characteristic MRI findings of SFTs by analyzing their radiological-pathological correlation.
Nine consecutive patients with SFT who underwent magnetic resonance imaging (MRI) prior to surgery were analyzed. Eight patients underwent contrast-enhanced MRI, and three underwent dynamic MRI. Radiological-pathological correlation analysis, co-occurrence matrix, run-length matrix, and histogram analysis were performed to assess the relationship between pathological findings T1- and T2-weighted images (T1-WI and T2-WI).
All nine lesions ranged in size from 20 to 36 mm. Seven lesions were located in the superior portion of the retrobulbar space found outside of the muscle cone, and two lesions in the inferior portion were located within it. No significant correlation was observed between the amount of collagenous tissue and the qualitative evaluation of the signal on T1-WI and T2-WI. Kurtosis on T2-WI was significantly correlated with the amount of collagenous tissue ( = -0.97, < 0.0001) and endothelial cells ( = -0.49, = 0.0479).
Kurtosis in the histogram analysis on T2WI showed a strong correlation with the amount of collagenous tissue.
孤立性纤维瘤（SFTs）较为罕见，因其多种放射学表现可能会被误诊。
通过分析孤立性纤维瘤的放射学-病理学相关性，阐明其特征性的MRI表现。
对9例术前接受磁共振成像（MRI）检查的连续孤立性纤维瘤患者进行分析。8例患者接受了对比增强MRI检查，3例接受了动态MRI检查。进行放射学-病理学相关性分析、共生矩阵、游程矩阵和直方图分析，以评估病理结果与T1加权像和T2加权像（T1-WI和T2-WI）之间的关系。
所有9个病灶大小在20至36毫米之间。7个病灶位于肌锥外球后间隙上部，2个病灶位于下部且在肌锥内。T1加权像和T2加权像上胶原组织量与信号的定性评估之间未观察到显著相关性。T2加权像上的峰度与胶原组织量（r = -0.97，P < 0.0001）和内皮细胞（r = -0.49，P = 0.0479）显著相关。
T2WI直方图分析中的峰度与胶原组织量显示出强烈相关性。
