去分化软骨肉瘤的影像分析

Imaging analysis of dedifferentiated chondrosarcoma of bone

目的 分析去分化软骨肉瘤的X线及CT表现 ,探讨去分化成分的X线、CT表现特点。方法 回顾性分析 13例去分化软骨肉瘤的X线及CT表现 ,并结合临床及组织学特点进行分析研究。结果 去分化软骨肉瘤不仅具有典型软骨肉瘤的表现 ,而且还具有去分化成分的影像特点。 13例中8例显示有骨化 ,11例有骨膜反应 ,12例有软组织肿快 ,10例有钙化 ,其中 8例钙化位于病灶中央部位。结论 去分化软骨肉瘤具有典型软骨肉瘤所不具备的去分化成分的影像特点 ,认识这些特殊的影像特点有助于提高对该病的正确诊断。

Objective To analyze the radiological findings of dedifferentiated chondrosarcoma, and to explore the imaging features of dedifferentiated tissue. Methods The X-ray and CT findings of 13 cases with dedifferentiated chondrosarcoma of bone were analyzed retrospectively, and studied with clinic and corresponding histological changes. Results The dedifferentiated chondrosarcoma not only had the radiological findings of typical chondrosarcoma but also had the imaging features of dedifferentiated tissues. In 13 patients, periosteal reactions were found in 11 cases, ossifications in 8 cases, soft tissue masses in 12 cases, calcifications in 10 cases, and the site of calcifications in 8 cases was in the center of the focus. Conclusion The dedifferentiated chondrosarcoma showed special imaging features, which includes ossification, calcification, periosteal reaction, and soft tissue mass. These features were not found in typical chondrosarcoma. Recognizing these specific features is helpful to the diagnosis of dedifferentiated chondrosarcoma.