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目的 探讨内源性脂性肺炎的CT诊断。资料与方法 回顾性分析 8例经手术病理证实的内源性脂性肺炎的CT征象。结果 肿块样病变 2例 (右肺上叶 ) ,肿块密度低于胸壁组织 (≤ 2 0HU)。肺叶或肺段实变 2例 ,分别位于右肺上叶及左肺上叶 ,实变区密度接近水样密度 (- 2～ 10HU)。肺叶不张 4例 ,分别位于右肺中叶、上叶及左肺上叶、下叶。病变肺组织肺泡内有大量泡沫细胞和间隔的纤维增生 ,2例有肉芽肿样改变。结论 内源性脂性肺炎多累及肺叶或肺段 ,可表现为肿块、实变或不张等多种征象 ,易误诊为结核、肿瘤等 ,最终诊断需依赖于病理组织学检查。
Objective To investigate the CT diagnosis of endogenous lipid pneumonia. Materials and Methods Retrospective analysis of CT findings of 8 cases of endogenous liposarcoma confirmed by surgery and pathology. Results Two cases of lump-like lesions (upper lobe of the right lung) showed a lower lump density than the thoracic wall (≤ 20HU). Two cases of consolidation of the lung or lung segment were located in the upper lobe of the right lung and the upper lobe of the left lung. The density of the solidified zone was close to that of the water sample (- 2 ~ 10HU). Pulmonary atelectasis in 4 cases, respectively, located in the right middle lobe, upper lobe and left upper lobe and lower lobe. Alveolar lesions of lung tissue with a large number of foam cells and fibrous septum, 2 cases of granulomatous changes. Conclusions Endogenous liposarcoma often involves lobes or segments of the lung, which can manifest as various signs such as lumps, consolidation or atelectomy. It is easily misdiagnosed as tuberculosis and tumor. The final diagnosis depends on histopathological examination.