这是一个强直性脊柱炎患者的骨盆正位片，显示双侧骶髂关节炎，伴随硬化与关节间隙狭窄。

This radiograph of the pelvis of a patient with ankylosing spondylitis shows bilateral sacroiliitis with sclerosis and narrowing of the sacroiliac joints.

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骨盆狭窄或畸形。

Pelvic stenosis or deformity.

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骨盆狭窄或畸形。

Pelvic stenosis or deformity.

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