螺旋CT对肺错构瘤的诊断价值

Diagnostic Value of Spiral CT in Pulmonary Hamartoma

目的探讨肺错构瘤的临床、螺旋CT诊断特点。方法统计经手术病理证实为肺错构瘤25例的临床、CT特点,所有病例均行CT扫描,其中5例行螺旋CT动态增强扫描。结果14例病灶位于右肺,11例位于左肺。17例肺错构瘤病灶光滑整齐,浅分叶8例,无深分叶征、毛刺征或卫星灶,苞米花样钙化、脂肪密度分别为3、4例。6例螺旋CT动态增强扫描中4例强化值<20 Hu,2例>20 Hu。结论肺错构瘤病灶光滑整齐,出现苞米花样钙化、脂肪密度是其特征性表现。螺旋动态增强CT扫描为其鉴别诊断提供了有价值的信息。

Objective To explore the clinical and spiral OT features of pulmonary hamartoma. Methods Twentyfive cases with hamartoma received surgical operation and confirmed by pathology were studied. All patients underwent OT scan, in which 6 cases underwent spiral dynamic enhancement CT. Results The hamartomas of 14 cases were in right lung, 11 in the left. 17 cases with pulmonary hamartoma had regular and clear margins, without deep Iobular- shaped or satellite focus. Popcorn shaped calcium and detection of fat were found in 3 and 4 cases respectively. In the 6 cases of dynamic study, 4 cases enhanced more than 20Hu and 2 cases were less than 20Hu. 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 differential diagnosis of pulmonary hamartoma.