PMC4114239_01
X-ray. Single 12 mm x 4 mm radio-opaque mass (arrow) can be visualized alongside the radial border of the affected joint.
eplasty14e28_fig1.jpg
PMC4114239_01_eplasty14e28_fig1.jpg
F1
X-ray showed a prominent area of soft tissue calcification projected just dorsolateral to the head of the middle finger metacarpal bone measuring 12 mm x 4 mm in diameter (Fig 1).
Intraoperative aspect. Single white tophus-like structure was excised. The structure was adjacent to metacarpophalangeal joint, but not penetrating into the joint capsule. Some collateral ligament attachment was observed.
eplasty14e28_fig2.jpg
PMC4114239_01_eplasty14e28_fig2.jpg
F2
A single gouty tophus like structure was found external to the joint, but infiltrating into the collateral ligaments of the joint (Fig 2).
Histopathological aspect. There is amorphous calcific material with an infiltrate of neutrophils and macrophages.
eplasty14e28_fig3.jpg
PMC4114239_01_eplasty14e28_fig3.jpg
F3
In addition, the calcific deposit contained a moderate neutrophilic inflammatory infiltrate (Fig 3).