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目的探讨骨小圆细胞肿瘤(small round cell tumor of bone,SRCT)的影像学特征及鉴别诊断,旨在提高对该病的认识及诊断水平。方法回顾性分析28例经病理证实的SRCT的影像表现。13例行X线平片检查,19例行CT检查,17例行MRI检查。结果 28例中,淋巴瘤10例,尤文氏肉瘤6例,浆细胞肿瘤6例,原始神经外胚层肿瘤4例,小细胞型骨肉瘤1例,间充质软骨肉瘤1例。CT、MRI表现为不同程度的骨质破坏,多数破坏较轻,但灶周软组织肿块较大且大于骨侵犯范围。结论 SRCT既有类似的影像学表现,各自也有其影像学特征,综合临床,可做出初步诊断,确诊需病理、免疫组织化学检查。
Objective To investigate the imaging features and differential diagnosis of small round cell tumor of bone (SRCT) in order to improve the understanding and diagnosis of the disease. Methods The imaging findings of 28 cases with pathologically confirmed SRCT were retrospectively analyzed. 13 cases of X-ray examination, 19 cases of CT examination, 17 cases of MRI. Results Among the 28 cases, there were 10 lymphoma, 6 Ewing’s sarcoma, 6 plasma cell tumor, 4 primitive neuroectodermal tumor, 1 small cell osteosarcoma and 1 mesenchymal chondrosarcoma. CT, MRI showed different degrees of bone destruction, most of the damage less, but the peritumoral soft tissue mass larger than the scope of bone invasion. Conclusion SRCT has similar imaging findings, each of which also has its imaging features, comprehensive clinical, can make a preliminary diagnosis, confirmed by pathology, immunohistochemical examination.