Histology of rare chondrosarcoma subtypes

(A) Histology of dedifferentiated chondrosarcoma with a sharp interface between conventional chondrosarcoma (left) and anaplastic sarcoma (right).
(B) Mesenchymal chondrosarcoma with undifferentiated small blue round cells (below) and cartilage differentiation (top).
(C) Clear cell chondrosarcoma demonstrating chondrocytes with abundant clear cytoplasm, cartilaginous matrix, and deposition of osteoid (hematoxylin and eosin staining, ∼500×).