J Korean Med Sci.  2022 Oct;37(43):e311. 10.3346/jkms.2022.37.e311.

Case 4: A 70-Year-Old Man With Painful Swelling of Left Forearm Unresponsive to Antibiotics

• Kim MH
• Choi S
• Park H
• Lee R
• Kim SY
• Wie SH

• KMID: 2534825
• DOI: http://doi.org/10.3346/jkms.2022.37.e311

Figure

• 

  Fig. 1 Magnetic resonance imaging of the left distal forearm. (A) Magnetic resonance imaging showed segmental skin swelling with faint enhancement, some fluid collection in the subcutaneous fat layer. (B) Irregular fascial thickening with enhancement in extensor muscle, abductor pollicis longus muscles. (C) Segmentally remarkable synovial thickening with enhancement in extensor and flexor muscles.

• 

  Fig. 2 Histopathological analysis. (A) Synovial regenerative change (dotted line) and necrotic change with neutrophil infiltration (arrow) (×40, H&E stain) (B) Lymphohistiocytic infiltration on synovial tissues (×100, H&E stain).H&E = hematoxylin-eosin.

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