case_images: PMC9647022_01
case_images: The X-ray image shows a mass at the distal end of the right thumb with marked phalanx destruction (arrow).
case_images: fonc-12-1005206-g001.jpg
case_images: PMC9647022_01_fonc-12-1005206-g001.jpg
case_images: f1
case_images: X-ray imaging identified a mass at the distal part of the thumb with bone destruction ( Figure 1 ).
case_images: 18F-FDG PET reveals intense areas of 18F-FDG uptake in the right thumb(arrow) and axillary lymph nodes (arrowhead).
case_images: fonc-12-1005206-g002.jpg
case_images: PMC9647022_01_fonc-12-1005206-g002.jpg
case_images: f2
case_images: In addition, 18F-FDG PET/CT examination revealed a significantly high metabolic activity in the thumb and right axillary lymph nodes ( Figure 2 ).
case_images: Photomicrograph shows many clumps composed of epithelial cells under the skin, the clumps are lobulated and the marginal cells are distributed in a palisade shape, with obvious keratinization in the center, but lacking a granular layer (A, HEx100). In the outer cells, there are obvious cytological atypia and nuclear pleomorphism (B, HEx400).
case_images: fonc-12-1005206-g003.jpg
case_images: PMC9647022_01_fonc-12-1005206-g003.jpg
case_images: f3
case_images: There are obvious cytological atypia and nuclear pleomorphism in the outer cells ( Figure 3 ).