Solitary fibrous tumors in abdomen and pelvis: Imaging characteristics and radiologic-pathologic correlation

Table 1 Radiological findings of the 15 cases with solitary fibrous tumors

No/age/sex	Benign/malignant	Location	Size (cm2)	Shape, margin	CT density/MRI intensity	Degree, pattern of enhancement
1/1/M	Benign	Adrenal region-L	3.4 × 3.4	Rounded, well-defined	Isodensity with dot calcification	Moderate, homogeneous
2/76/M	Benign	Pararectal space-L	4.0 × 4.1	Oval, well-defined	Homogeneous isodensity	Moderate, homogeneous
3/39/M	Benign	Rectovesical space	11.3 × 11.5	Lobulated, well-defined	Isodensity with patchy necrosis	Marked, heterogeneous
4/41/M	Benign	Paravesical space-R	10.8 × 14.0	Oval, well-defined	Isodensity with patchy necrosis	Moderate, heterogeneous
5/29/F	Benign	Paravesical space-L	8.1 × 6.3	Oval, well-defined	Homogeneous isodensity	Marked, homogeneous
					Homogeneous isointensity (T1WI)
					Homogeneous hyperintensity (T2WI)
6/43/F	Benign	Presacral space	15.3 × 18.0	Oval, well-defined	Isodensity with patchy necrosis	Marked, heterogeneous
					Heterogeneous isointensity with patchy hyperintensity (T1WI)
					Heterogeneous hyperintensity with patchy hypointensity (T2WI)
7/60/F	Benign	Intraperitoneal	18.0 × 20.2	Lobulated, well-defined	Heterogeneous isointensity with patchy hypointensity (T1WI)	Marked, heterogeneous
					Heterogeneous hyperintensity (T2WI)	Progressive enhancement
8/33/M	Benign	Presacral space	11.3 × 12.0	lobulated, well-defined	Isointensity with radial hypointensity (T1WI)	Marked, heterogeneous
					Heterogeneous hyperintensity with radial hypointensity (T2WI)	Progressive enhancement
9/69/M	Malignant	Retroperitoneal	15.3 × 20.8	Lobulated, ill-defined	Isodensity with patchy necrosis	Moderate, heterogeneous
10/59/M	Malignant	Prevesical space	9.3 × 10.2	Oval, well-defined	Homogeneous isodensity	Moderate, homogeneous
11/52/M	Malignant	Intraperitoneal	7.4 × 8.1	Lobulated, well-defined	Isodensity with patchy necrosis	Marked, heterogeneous
12/61/M	Malignant	Paravesical space-R	11.6 × 12.0	Oval, well-defined	Isodensity with patchy necrosis	Marked, heterogeneous
13/47/M	Malignant	Rectovesical space	10.4 × 11.3	Oval, well-defined	Isodensity with patchy necrosis	Moderate, heterogeneous
					Heterogeneous isointensity with patchy hypointensity (T1WI)
					Heterogeneous hyperintensity (T2WI)
14/51/M	Malignant	Retroperitoneal	15.0 × 25.1	Lobulated, ill-defined	Heterogeneous isointensity with patchy hypointensity (T1WI)	Marked, heterogeneous
					Heterogeneous hyperintensity (T2WI)	Progressive enhancement
15/57/M	Malignant	Rectovesical space	4.7 × 4.8	Oval, well-defined	Isointensity with radial hypointensity (T1WI)	Marked, heterogeneous
					Heterogeneous hyperintensity with radial hypointensity (T2WI)	Progressive enhancement

M: Male; F: Female; L: Left; R: Right; CT: Computed tomography; MRI: Magnetic resonance imaging; T1WI: T1-weighted imaging; T2WI: T2-weighted imaging.