骨肉瘤与软骨肉瘤CT表现的对比分析

目的 对比分析骨肉瘤与软骨肉瘤的CT表现,探讨其CT征象鉴别诊断的价值.方法 回顾性分析经手术病理证实的骨肉瘤35例与软骨肉瘤22例的CT表现并进行对照研究,P<0.05为差异有统计学意义.结果 骨膜反应、Codman三角、放射状骨针、Ⅰ型及Ⅳ型钙质样密度影、长管状骨软组织肿块环绕度>1/2、肿瘤实质与肌肉CT值的比(△T/△M)有统计学意义.以上所有影像表现中,Ⅰ型钙质样密度影诊断的灵敏度和特异度最高,Ⅳ钙质样密度影诊断的灵敏度和特异度最低.结论 骨膜反应、Codman三角、放射状骨针、长管状骨软组织肿块环绕度>1/2、Ⅰ型钙质样密度影这些征象提示骨肉瘤的可能性更大.Ⅳ型钙质密度影提示软骨肉瘤可能性更大.

Comparative analysis of CT manifestations of osteosarcoma and chondrosarcoma

Objective To analyze the CT features of osteosarcoma and chondrosarcoma and to explore the value of CT differential diagnosis.Methods The CT findings of 35 cases with osteosarcoma and 22 cases with chondrosarcoma confirmed by operation and pathology were analyzed retrospectively.P<0.05 for the difference was statistically significant.Results Periosteal reaction, Codman triangle, radial spicule, type Ⅰ and Ⅳ calcium-like density, long tubular soft tissue mass around greater than 1/2, the ratio of tumor CT to muscle CT (△T/△M) was statistically significant.Of all the above image performance, the sensitivity and specificity of the type I calcium-like density were the highest, while those of the type Ⅳ calcium-like density were the lowest.Conclusion The osteosarcoma is more likely to have the signs of periosteal reaction, Codman triangle, radial spicule and type Ⅰ calcium-like density, while the chondrosarcoma is more likely to have the signs of type Ⅳ calcium-like density.