Four cases of proximal femoral focal deficiency (PFFD) in an otherwise healthy infant are described. Antenatal diagnosis was made at 27, 23, 23 and 18 weeks of gestation by routine ultrasound (US) examination. Compute...Four cases of proximal femoral focal deficiency (PFFD) in an otherwise healthy infant are described. Antenatal diagnosis was made at 27, 23, 23 and 18 weeks of gestation by routine ultrasound (US) examination. Computer Tomography (CT) was performed after 30 weeks of gestation and confirmed the images obtained by US. The diagnosis was confirmed after delivery. These cases illustrate the importance of combining US and CT to improve accuracy of prenatal diagnosis of skeletal disorders.展开更多
目的探讨CT、MRI影像特征等对四肢伴明显动脉瘤样骨囊肿的骨巨细胞瘤(giant cell tumours with prominent aneurysmal bone cysts,GABCs)和原发性动脉瘤样骨囊肿(primary aneurysmal bone cysts,PABCs)的鉴别诊断价值。方法回顾性分析2...目的探讨CT、MRI影像特征等对四肢伴明显动脉瘤样骨囊肿的骨巨细胞瘤(giant cell tumours with prominent aneurysmal bone cysts,GABCs)和原发性动脉瘤样骨囊肿(primary aneurysmal bone cysts,PABCs)的鉴别诊断价值。方法回顾性分析20例四肢GABCs和21例PABCs患者的CT和MRI影像特征,并同时收集患者的年龄和性别,比较两组不同指标间差异,并计算两组患者的年龄、包块横径/纵径比、软骨下骨受累、病变边缘深分叶、包块周围血管影对GABCs及PABCs诊断的灵敏度、特异度。结果两组患者的年龄、包块横径/纵径比比较差异有显著性(t=-3.956、-2.985,P<0.05),两组患者的软骨下骨受累的比例、病变边缘深分叶的比例、包块周围血管影的比例比较差异有显著性(P<0.05)。年龄、包块横径/纵径比、软骨下骨受累和病变边缘深分叶对GABCs患者诊断的灵敏度分别为75.0%、65.0%、68.0%和80.0%,特异度分别为81.0%、66.7%、81.3%和61.3%。相反,包块周围血管影诊断PABCs的灵敏度为52.4%,特异度为95.0%。结论CT和MRI影像特征中的软骨下骨受累、病变边缘深分叶、包块横径/纵径比高低以及包块周围血管影及患者年龄高低对GABCs和PABCs具有鉴别诊断的价值。展开更多
文摘Four cases of proximal femoral focal deficiency (PFFD) in an otherwise healthy infant are described. Antenatal diagnosis was made at 27, 23, 23 and 18 weeks of gestation by routine ultrasound (US) examination. Computer Tomography (CT) was performed after 30 weeks of gestation and confirmed the images obtained by US. The diagnosis was confirmed after delivery. These cases illustrate the importance of combining US and CT to improve accuracy of prenatal diagnosis of skeletal disorders.
文摘目的探讨CT、MRI影像特征等对四肢伴明显动脉瘤样骨囊肿的骨巨细胞瘤(giant cell tumours with prominent aneurysmal bone cysts,GABCs)和原发性动脉瘤样骨囊肿(primary aneurysmal bone cysts,PABCs)的鉴别诊断价值。方法回顾性分析20例四肢GABCs和21例PABCs患者的CT和MRI影像特征,并同时收集患者的年龄和性别,比较两组不同指标间差异,并计算两组患者的年龄、包块横径/纵径比、软骨下骨受累、病变边缘深分叶、包块周围血管影对GABCs及PABCs诊断的灵敏度、特异度。结果两组患者的年龄、包块横径/纵径比比较差异有显著性(t=-3.956、-2.985,P<0.05),两组患者的软骨下骨受累的比例、病变边缘深分叶的比例、包块周围血管影的比例比较差异有显著性(P<0.05)。年龄、包块横径/纵径比、软骨下骨受累和病变边缘深分叶对GABCs患者诊断的灵敏度分别为75.0%、65.0%、68.0%和80.0%,特异度分别为81.0%、66.7%、81.3%和61.3%。相反,包块周围血管影诊断PABCs的灵敏度为52.4%,特异度为95.0%。结论CT和MRI影像特征中的软骨下骨受累、病变边缘深分叶、包块横径/纵径比高低以及包块周围血管影及患者年龄高低对GABCs和PABCs具有鉴别诊断的价值。