Sacral Insufficiency Fracture after Radiotherapy for Cervical Cancer: Appearance and Dynamic Changes on 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography
Table 2
Imaging features of the 38 patients with SIF.
Sacral involvement
Left
17 (44.7%)
Right
8 (21.%)
Double
13 (34.2%)
CT density
Increased
35 (92.1%)
Unchanged
3 (7.9%)
Decreased
0 (0%)
Sacral manifestation
Abnormal (cortical folds or fracture lines)
28 (73.7%)
Normal
10 (26.3)
Metabolism (SUVmax)
Range
1.8–5.9
Average
3.1
Metabolic pattern
Diffuse or linear
37 (97.3%)
Focal
1 (2.7%)
SIF, sacral insufficiency fracture; SUVmax, maximum standardized uptake value.