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目的:探讨肺错构瘤的CT、MRI征象特点。方法:回顾性分析本院2006年1月至2008年6月经手术病理证实的11例肺错构瘤的CT和MRI的表现,以及3例CT动态增强扫描的特点。结果:肺错构瘤病灶光滑整齐,浅分叶3例,无深分叶征和毛刺征。其中5例有不同程度的钙化,1例为“爆米花”样钙化。4例病灶内有脂肪密度。3例肺错构瘤行螺旋CT动态增强扫描轻度增强(5HU-16HU)。6例T2WI呈高信号中夹杂分隔样低信号。结论:钙化(典型的爆米花样钙化)、脂肪密度是其特征性表现。螺旋动态增强CT扫描和MRI为其诊断和鉴别诊断提供了有价值的信息。
Objective: To investigate the CT and MRI features of pulmonary hamartoma. Methods: The CT and MRI manifestations of 11 cases of pulmonary hamartoma confirmed by surgery and pathology in our hospital from January 2006 to June 2008 were retrospectively analyzed, and the features of 3 cases of CT dynamic contrast-enhanced scan were retrospectively analyzed. Results: The lesions of lung hamartoma were smooth and neat. There were 3 cases with shallow lobulation without deep lobulation and burr sign. Five of them had varying degrees of calcification, and one was “popcorn” -like calcification. Four cases had fat density in the lesion. 3 cases of pulmonary hamartoma spiral CT dynamic enhanced scan mild enhancement (5HU-16HU). 6 cases of T2WI was high signal mixed with isolated low signal. Conclusion: Calcification (typical popcorn-like calcification), fat density is its characteristic manifestation. Spiral dynamic contrast-enhanced computed tomography and MRI provide valuable information for its diagnosis and differential diagnosis.