1. Tophaceous Gout of Lumbar Spine with Fever Mimicking Infection
De-an Qin, MD, Jie-fu Song, MD, Xiao-fang Li, MD, Yan-yan Dong, MD 
The American Journal of Medicine 
Volume 131, Issue 9, Pages e353-e356 (September 2018)
DOI: /j.amjmed
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2. Figure 1
(A) Computed tomography showing an ill-defined and erosive lesion in the L4 facet joint. (B) Magnetic resonance imaging T1-weighted images showing disseminated and extensive hypointense foci on L3-5 facet joints and pedicles. (C) Magnetic resonance imaging T2 fat saturation image showing numerous hyperintense and oval masses within sacrospinal muscle. (D) Homogeneous peripheral enhancement after the intravenous administration of gadolinium for the masses. (E) Plain radiograph of tophaceous enthesopathy of the left foot. (F) Plain radiograph of tophaceous enthesopathy of the bilateral anterior inferior iliac spine, greater trochanter, and lesser trochanter. (The arrows denote the lesions.)
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3. Figure 2
Computed tomography–guided core needle biopsy of the lumbar erosive facet for histologic diagnosis (arrow).
The American Journal of Medicine  , e353-e356DOI: ( /j.amjmed )
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4. Figure 3
Mononuclear cells, multinuclear giant cells, and patchy fibrosis exudation including homogenous, pink eosinophilic and ill-defined material (HE, 10*).
The American Journal of Medicine  , e353-e356DOI: ( /j.amjmed )
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