目的探讨骨肉瘤亚型的临床、影像学特征,以提高对骨肉瘤亚型的认识。方法结合文献回顾性分析经临床、病理证实的4种亚型8例骨肉瘤的影像学表现。结果3例毛细血管扩张型分别位于股骨上段、股骨下段和肱骨远段,X线显示骨质呈膨胀性、溶骨性破坏,软组织肿块,其中1例类似动脉瘤样骨囊肿;3例骨旁型位于肩胛骨、股骨中段和股骨下段,X线显示骨致密性骨块为主要表现,骨髓腔内未见异常,突起骨块与骨皮质之间见有透光带;1例骨膜型位于股骨下段,CT显示骨皮质轻度破坏,骨髓腔内未见病灶,有巨大的软组织肿块,肿块密度不均;1例髓内高分化型位于肱骨中上段,X线显示骨质囊状破坏,界限清楚,髓腔扩张,骨皮质变薄。结论该4种亚型各自具有一定影像特征,有助于诊断。 Objective To investigate the clinical and imaging characteristics of osteosarcoma subtypes in order to improve their understanding of the subtype of osteosarcoma. Methods The imaging findings of 8 osteosarcomas in 4 subtypes clinically and pathologically confirmed by literature were retrospectively analyzed. Results Three cases of telangiectasias were located in the upper femur, the lower femur and the distal humerus respectively. X-ray showed osteolysis, osteolytic destruction and soft tissue mass, of which 1 was similar to aneurysmal bone cyst. Type located in the scapula, the middle of the femur and the femur, X-ray showed bone-dense bone as the main performance, no abnormality within the bone marrow cavity, there is a clear band between the protruding bone and the cortical bone; 1 case of periosteal type located in the femur , CT showed mild cortical bone destruction, no lesions in the marrow cavity, a huge soft tissue mass, mass density unevenness; 1 case of intramedullary well-differentiated type in the upper humerus, X-ray showed bone cystic destruction, clear boundaries , Medullary cavity expansion, cortical bone thinning. Conclusion The four subtypes have certain imaging features each, which is helpful for diagnosis.