Sacral Insufficiency Fracture after Radiotherapy for Cervical Cancer: Appearance and Dynamic Changes on 18F-Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography

Table 3

Follow-up imaging changes of the 38 patients with SIF.

CT density changes
Increased	28 (73.7%)
Unchanged	8 (21.0%)
Increased	2 (5.3%)
CT high-density range change
Increased	32 (84.2%)
Unchanged	4 (10.5%)
Increased	2 (5.3%)
PET metabolic changes
Increased	3 (9.3%)
Unchanged	2 (6.3%)
Decreased	27 (84.4%)
Complications
Infected	3 (7.9%)
Pelvic deformation	3 (7.9%)
None	32 (84.2%)

SIF, sacral insufficiency fracture.