Septic sacroiliitis - brucellosis

Case contributed by Ammar Haouimi
Diagnosis almost certain


Three weeks history of fever with lower lumbar pain radiating to the left lower limb.

Patient Data

Age: 25 years
Gender: Female

The MRI sequences demonstrate a subchondral bone marrow edema of both surfaces of the left sacroiliac joint of low signal on TWI, high signal on T2WI with prominent enhancement, joint effusion as well as adjacent abscess and edematous infiltration of the ipsilateral iliopsoas muscle.

Chronic changes of the right sacroiliac joint.

Case Discussion

MRI features of a unilateral sacroiliitis with abscess formation. The serum agglutination test was positive for Brucella infection

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