Case Report
Copyright ©The Author(s) 2020.
World J Clin Cases. Jan 6, 2020; 8(1): 126-132
Published online Jan 6, 2020. doi: 10.12998/wjcc.v8.i1.126
Figure 4
Figure 4 Hematoxylin and eosin stain. A, B: Pleomorphic chondrocytes with nuclear positivity for S-100 (400 ×); C, D: Moderate reaction to Ki-67 (400 ×); proliferative activity is observed mainly in undifferentiated small cells and some atypical chondrocytes.