PMC9633737_01
Magnetic resonance imaging of the sacroiliac joint. (A) Bone marrow edema appears as a hypointense signal on T1-weighted images. (B) Bone marrow edema appears as a hyperintense signal on short tau inversion recovery images.
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A 19-year-old man presented with peripheral spondyloarthritis characterized by typical magnetic resonance imaging (Fig. 1).
Chest X-ray. (A) Normal chest X-ray before secukinumab treatment. (B) Chest X-ray performed after 2 years of secukinumab therapy showed consolidation in the left upper lobe (long white arrows). (C) Chest X-ray after 4 months of anti-TB therapy showed that consolidation was reduced significantly.
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Histologic examination of a bronchoscopic biopsy sample (hematoxylin and eosin), showing granulomatous inflammation (black arrows: giant cells; blue arrows: histiocytes; red arrows: lymphocytes).
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Bacilli smear and detected M tuberculosis, which was found to be sensitive to rifampicin and isoniazid by a line probe assay. Bronchoscopic biopsy demonstrated caseating granulomatous inflammation (Fig. 3).