肺错构瘤的CT诊断

目的:探讨CT在肺部错构瘤诊断和鉴别诊断中的价值。方法:回顾分析12例经穿刺活检或手术病理证实的肺错构瘤的CT表现。结果:中央型2例,合并肺不张1例;周围型10例,形态为圆形或类圆形,病灶边缘光滑5例,边缘浅分叶5例。12例患者中,病灶内密度均匀者4例;不均匀者8例;病灶内只有钙化1例,既有钙化又有脂肪成分5例,无钙化有脂肪成分2例,无钙化又无脂肪成分4例。增强扫描7例,3例未见明显强化,4例轻度强化(强化值小于20 HU)。结论:肿瘤的形态及密度是诊断的重要依据,瘤体内钙化、脂肪成分、不强化或弱强化具有一定的影像学特征,薄层平扫结合增强扫描有重要的鉴别诊断价值。

CT diagnosis of pulmonary hamartoma

Objective：Explore and evaluate the CT diagnosis of pulmonary hamartoma. Methods：Retrospectively analyzed 12 cases of CT expressions of pulmonary hamartoma proved by needle biopsy and operative pathology. Results： There are two central types, one atelectasis and 10 peripheral types with round or quasi-circular shape. There are 5 cases with smooth margin of lesion and 5 peripherai mesangiocapillary. Among the 12 patients ,4 have balanced density in the lesion, and 8 with unbalanced one. There is only one calcifica tion,5 calcifications with fat,2 non-calcification with fat and 4 without calcification and fat. Seven cases underwent enhanced scanning and 3 of them showed no obvious improvement. Four improved slightly. （ 〈 20 HU） o Conclusion：The morphology and density of tumor are the important evidertces for diagnosis. The calcification,the fat, nonimprovement or slight improvement of the tumor represent some J radiological characteristics. Thin slice with enhanced scanning showed significant diagnostic value.