目的研究儿童内生软骨瘤影像 学及病理学特点。方法 回顾分析12例内 生软骨瘤影像特点，评估疾病大小、与生 长板位置关系、骨基质骨化特点、骨膜反 应、MR信号特点和骨及软组织水肿。结果 疾病位于指骨为33% 、掌骨为25%、股骨 为33%、胫骨为8%/。CT和X显示观察到20% 肿瘤出现典型环形和弧形基质骨化。75% (9/12)发现骨内扇形征。内生性软骨瘤邻 近生长板生长为50%。MR显示典型软骨骨 化形式（环形和弧形），T1低信号，T2高 信号，增强后周围环形强化。结论 儿童 内生软骨瘤相对少见，常表现为骨内扇形 征，基质骨化罕见。

Objective To study imaging and pathological findings of enchondromas in children. Methods 12 enchondromas of imaging feature were retrospectively reviewed. Imaging evaluation included the assessment of lesion size, location to the growth plate, mineralization matrix, periosteal reaction, MR signal characteristics, and intraosseous and soft-tissue edema. Results Lesions located in the phalanx, metacarpal, femur, tibia take account for 33%, 25%, 33% and 8% respectively. Matrix mineralization in typical "ringsand-arcs" pattern was observed in 20% of the lesions with radiography/CT. Lesions were expansive with endosteal scalloping in 75% of cases and 50% of them were close to growth plate. All enchondromas in MR imaging demonstrated as typical cartilaginous matrix of lobules with high T2 signal, low T1 signal, and peripheral enhancement. Conclusion Enchondroma in children are relatively rare tumors, with frequent endosteal scalloping and rare matrix mineralization.