Active sacroiliitis

Case contributed by Roberto Schubert
Diagnosis certain

Presentation

Chronic low back pain. HLA B27+.

Patient Data

Age: 30 years
Gender: Male
x-ray

Multiple bilateral "string of beads" erosions and subchondral sclerosis of the sacroiliac joints.

Bone scan

Nuclear medicine

High bone metabolic turnover at both sacroiliac joints indicating active inflammation.

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