成软骨细胞瘤的影像学表现及诊断价值

目的 探讨成软骨细胞瘤的影像学特征及诊断价值。资料与方法 分析经病理证实的成软骨细胞瘤15例的临床及影像学表现，所有病例均作X线平片检查，9例同时行CT扫描。结果 肱骨5例，股骨6例，胫骨、锁骨、髂骨和腰椎各1例；病灶呈圆形或椭圆形骨质破坏，部分呈膨胀、偏心性生长，管状骨病变多起源于骨骺，可累及干骺端；病灶内常有钙化，周围见硬化带，骨皮质破裂，软组织肿块，少数有骨膜反应。X线平片正确诊断8例，未定性3例，误诊4例，诊断准确率53．3％；CT正确诊断6例，误诊3例，诊断准确率66，7％。结论 多数成软骨细胞瘤有典型的影像特征，影像学检查对其具有重要诊断价值；X线平片仍是基本检查方法，CT可提供更多诊断与鉴别诊断的依据。

Imaging Features of Chondroblastomas

Objective To discuss the imaging features of chondroblastomas, and to evaluate radiography and CT in its diagnosis.Materials and Methods Radiography was taken in 15 patients with pathologically-proved chondroblastomas, of which additional CT scan was done in 9. Imaging findings were analyzed.Results The lesion was located in humerus (n=5), femur (n=6), tibia (n=1), clavicle (n=1), iliac bone (n=1) or lumbar vertebra (n=1). The lesion was presented as round or oval bony destruction with sclerotic border, interrupted cortex and soft-tissue mass. Periosteal reaction was seen in a few cases. Plain film made a correct diagnosis in 8 cases (53.3%), and CT in 6 cases (66.7%).Conclusion Most chondroblastomas carry typical imaging characteristics. Imaging exam is of great value for its diagnosis. Plain radiography is still the fundamental method, CT can provide more evidence useful for its diagnosis and differentiation.