骨样骨瘤的X线和CT表现

目的 :分析骨样骨瘤的X线和CT表现。方法 :搜集经手术病理证实的骨样骨瘤 2 3例。所有病例均行X线和CT检查 ,分析影像表现特征及其对瘤巢及瘤巢周围改变的显示能力。结果 :2 3例病灶均表现为一圆形或卵圆形的透亮区 ,直径 0 .4～ 1.7cm ,平均 0 .98cm ,其周围有不同程度的骨质硬化。X线和CT对瘤巢显示率分别为 78.3 %( 18/2 3 )和 10 0 %( 2 3 /2 3 )。结论 :瘤巢是确诊骨样骨瘤的关键 ,X线平片是诊断骨样骨瘤的重要检查方法 ,CT是显示瘤巢的最佳方法。

The X-ray and CT findings in osteoid osteoma

Objective:To analyze the X ray and CT findings in osteoid osteoma.Methods:Twenty three cases of osteoid osteoma proved by surgical pathology were collected, including 16 male and 7 female. Among the 23 cases, all patients had plain films and were imaged with CT scans. The imaging findings of osteoid osteoma and the ability of X ray and CT in demonstrating the nidus and the surrounding reaction were analyzed.Results:The imaging manifestations of osteoid osteoma revealed a circular or oval radiolucency (nidus) with different bone sclerosis around the nidus. The diameter ranged from 0.4 cm to 1.7 cm,with the average of 0.98 cm.The detection rate of nidus was 77% (16/23) for X ray plain film and 100% (23/23) for CT,respctively.Conclusion:Nidus is the key in diagnosing the osteoid osteoma. Plain filming is still an important examination method for osteoid osteoma. CT scan is the best method to demonstrate the nidus.