The following abnormalities are detected within the right sacroiliac joint:
- edema of both joint surfaces displays low T1 and high T2 signals
- widening of the right joint space more prominent inferiorly distended with fluid
- accompanied huge fluid component is tracking from the inferior aspect of the joint towards the right iliac muscle that appears edematous and enlarged with intramuscular fluid-filled pocket measures 77 x 46 x 90 mm exerting medial displacement of both the right external iliac vessels as well as right psoas muscle
- abnormal edema of the right iliac crest bone marrow as well as the overlying gluteus medius and minimus muscles
- abnormal bone marrow edema of the right aspect of the sacrum with the involvement of the right S1-S2 and S2-S3 neural foramen and nerve roots with the inflammatory process
- DWI shows restricted diffusion of the whole process
Bilateral small inguinal lymph nodes.