高分辨CT诊断恶性弥漫性肺间质疾病的价值

目的：探讨高分辨CT（HRCT）诊断恶性弥漫性肺间质疾病的价值，加深对恶性弥漫性肺疾患HRCT表现的认识，从而提高肺间质疾病的诊断、鉴别诊断水平。方法：复习文献并回顾分析5例肺淋巴管癌病临床病例及其HRCT特点。结果：肺淋巴管癌病是恶性肿瘤致弥漫性肺间质病变最常见疾病，其HRCT特点：小叶间隔不均匀增厚，不均一的支气管血管束结节状增厚，胸膜不规则增厚，纵隔淋巴结肿大等，区别于良性肺间质病变HRCT改变。结论：HRCT作为常规的CT的一种补充，近年在肺部疾病影像学诊断中受到广泛重视，因其能清晰显示肺组织的细微结构，故可用于弥漫性肺疾病的诊断和鉴别诊断。

The Application of High Resolution CT in the Diagnosis of Malignant Diffusing Pulmonary Interstitial Disease

Objective: To explore the application of Hige Resolution CT (HRCT) in the diagnosis of malignant diffuse pulmonary interstitial disease and improve the level of diagnosis and differential diagnosis of the pulmonary interstitial disease. Method: Review literature and retrospective analysis of 5 clinical cases of pulmonary lymphangitic carcinomatosis (PLC) and it' s HRCT feature . Result: PLC is the most common malignant disease which can cause diffuse pulmonary interstitial disease. HRCT scans reveal a beaded chain appearance caused by uneven thickening of the interlohular septa and pleural membrane, polygonal thickening of bronchovaseular bundles, and mediaslinal lymphadenopathy as well, distinguished from that of benign pulmonary interstitial disease. Conclution: Besides regular CT, HRCT has been pay more attention to extensively in the diagnosis of pulmonary- disease. Revealing subtle structure of lung tissue clearly , HRCT has been used in the diagnosis and differential diagnosis of diffuse pulmonary diseases.