摘要
目的探讨肺错构瘤的CT征象特点。方法统计28例经手术病理证实为肺错构瘤的CT特点,并与35例周围性肺癌的CT征象对照分析,所有病例均行CT扫描,其中8例肺错构瘤和11例周围性肺癌行螺旋CT动态增强扫描。结果肺错构瘤病灶光滑整齐,浅分叶14例,无深分叶征、毛刺征或卫星灶。其中13例有不同程度的钙化,4例为“爆米花”样钙化。7例病灶内有脂肪密度。病灶内出现钙化(尤其是“爆米花”样钙化)及脂肪密度的比例高于周围性肺癌。8例肺错构瘤行螺旋CT动态增强扫描,其中6例最大CT强化值<20Hu,2例>20Hu;11例周围性肺癌行动态增强CT扫描,其中仅2例最大CT强化值<20Hu,9例>20Hu。结论肺错构瘤病灶光滑整齐,出现钙化(尤其是“爆米花”样钙化)、脂肪密度是其特征性表现。螺旋动态增强CT扫描为其诊断和鉴别诊断提供了有价值的信息。
[Objective] To summarize the CT feature of pulmonary hamartoma. [Methods] 28 cases with hamartoma and 35 cases with peripheral bronchogenic carcinoma received through surgical operation and confirmed by pathology were sdudied. All patients underwent CT scan, in which 8 hamartomas and 11 peripheral bronchogenic carcinomas underwent spiral dynamic enhancement CT. Comparative studies were carried out between hamartoma and peripheral bronchogenic carcinoma. [Results] All pulmonary hamartoma had regular and clear margins, without deep lobular-shaped or satellite focus. Calcification were detected in 13 cases and popcorn-shaped calcium in 4 cases. Detection of fat were found in 7 csses. The percentage of occurl＇ence of calcification and fat in hamartoma is higher than in peripheral bronchogenic carcinoma. In the 8 hamartomas of dynamic study, 6 enhanced less than 20 HU and 2 more than 20 HU. In the 11 peripheral bronchogenic carcinomas, 2 enhanced less than 20 HU and 9 more than 20 HU. [Conclusions] Pulmonary hamartoma has regular and clear margins. Popcorn-shaped calcium and detection of fat are the characteristics in CT scan. Dynamic contrast enhancement CT is helpful in the differentiation of pulmonary hamartoma.
出处
《中国现代医学杂志》
CAS
CSCD
北大核心
2006年第6期933-936,共4页
China Journal of Modern Medicine
关键词
肺错构瘤
螺旋CT
动态增强
诊断
lung hamartoma
spiral CT
dynamic enhancement
diagnosis
