骨样骨瘤的X线、CT诊断及鉴别诊断  

X-ray and CT diagnosis and differential diagnosis of osteoid osteoma

作　　者：刘鑫 蒋志勇[2] 

机构地区：[1]上海市奉贤区中医医院放射科,201400 [2]黑龙江省齐齐哈尔市第一医院放射科

出　　处：《上海医学影像》2007年第3期241-243,共3页Shanghai Medical Imaging

摘　　要：目的分析骨样骨瘤的X线、CT表现及其鉴别诊断,探讨其影像学特征。方法搜集经手术病理证实的骨样骨瘤18例。男13例,女5例。所有病例均行X线检查,其中15例同时行CT检查,分析骨样骨瘤在X线、CT上的表现及其对瘤巢及瘤巢周围改变的显示能力,总结其特征性的影像学表现。结果18例病灶均表现为一圆形或卵圆形的透亮区,直径0.3～1.6cm,平均0.9cm,其周围有不同程度的骨质硬化。18例X线平片仅14例显示瘤巢,15例行CT检查者均清楚显示瘤巢,X线和CT对瘤巢显示率分别为78%(14∕18)和100%(15∕15)。结论瘤巢是确诊骨样骨瘤的关键,X线平片仍然是诊断骨样骨瘤的重要方法,CT是显示瘤巢的最佳方法。Objective To analyze the X-ray and CT imaging findings and differential diagnosis in osteoid osteoma and to evaluate their imaging characteristics. Methods Eighteen cases of osteoid osteoma proved by surgical pathology were collectd,including 13 males and 5 females. Among the 18 cases,all patients had plain films,15 were imaged with CT scanning.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 0.3cm to 1.6cm,with the average of 0.9cm.Among 18 cases,only 14 cases showed nidus on plain film, all 15 cases with CT scanning showed nidus. The detection rate of nidus was 78% （14/18） for X-ray plain film and 100%（15/15） for CT, respectively. Conclusion Nidus is the key in diagnosing the osteoid osteoma correctly.Plain film is still an important checking method for osteoid osteoma, CT scan is the best method to demonstrate the nidus.

关 键 词：骨瘤 骨样 放射摄影术 体层摄影术 X线计算机 

分 类 号：R738.1[医药卫生—肿瘤]