Fig. 3From: Primary intra- and extradural extramedullary mesenchymal chondrosarcoma with isolated punctate calcification: case report and literature reviewPostoperative histopathological findings. A The chondroid component stained positive for S-100 protein. B Round or spindle-shaped undifferentiated cells with island-like regions of cartilage C A biphasic pattern. D spindle-shaped undifferentiated cells stained positive for myogeninBack to article page