结论：由骨软骨瘤转化的去分化软骨肉瘤非常少见，预后较差。
腹膜后肿瘤，具有如此体积和组织学形态（梭形细胞）让我们不得不考虑去分化脂肪肉瘤的可能性。
基因表达谱芯片筛选甲状腺癌失分化相关基因的初步研究
1·These tumors are known as dedifferentiated liposarcomas.
这样的肿瘤被称为去分化的脂肪肉瘤。
2·Correspondingly the ultrastructural integrity of the dedifferentiated cells is less damaged.
相应的去分化细胞超微结构完整，不损坏。
3·This activation might promote development of the dedifferentiated phenotype.
这种激活作用会促进去分化表型的产生。
4·The aim of this study was to determine the frequency of STAT6 expression in dedifferentiated liposarcoma and the underlying genetic mechanism.
本研究的目的在于确定STAT 6在去分化脂肪肉瘤中表达的频率及其分子机制。
5·Dedifferentiated chondrosarcoma (DDCS) comprises approximately 10%of all chondrosarcomas and has the worst outcome with a 5-year survival of 10%.
去分化软骨肉瘤(DDCS)约占所有软骨肉瘤的10%，预后极差，5年生存率不到10%。好发于股骨、肱骨和骨盆。