孤立性纤维性肿瘤(solitary fibrous tumor，SFT)属于梭形细胞 肿瘤，好发于胸膜、腹部、软组织等全身各部位，但其临床发病率较 低且多为良性。尽管如此，SFT因生长迅速，极易对脏器造成压迫，尤 其腹部SFT压迫胃肠道及肾脏可产生一系列并发症[1]。临床主要以切除 术治疗腹部SFT，肿瘤性质亦只能通过术后病理学及免疫组化检测加以 判定，术前获取肿瘤信息则多依赖于电子计算机断层扫描(CT)、核磁 共振成像(MRI)及超声等影像学手段，而既往研究已充分验证上述影像 学检查适用于胸部SFT[2]。基于此，本研究将腹部SFT的CT与MRI影像学 特点进行对比分析，现作如下报道。

Objective To explore the clinical value of computed tomography (CT) and magnetic resonance imaging (MRI) in the diagnosis of abdominal solitary fibrous tumor (SFT). Methods The clinical data of 80 patients with SFT were retrospectively analyzed, and the basic imaging features and enhanced performance of CT and MRI were compared. Results There were no statistically significant differences in the morphology, boundary, cystic changes, density, calcification, hemorrhage, surrounding tissue compression, surrounding tissue infiltration, and pedunculation features of abdominal SFT by CT and MRI (all P>0.05). The CT value showed the trend of "rapid increase and slow decrease" and the tumor boundary was relatively clear by CT enhanced scan. The signal showed a continuous enhancement trend, especially the vascular shadow after MRI enhancement. Conclusion The images of CT and MRI of abdominal SFT have their own features but provide the same diagnostic information, and they both have high diagnostic value before operation.