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目的:探讨肺隔离症(PS)的CT表现及特点。方法:回顾分析12例经临床病理证实的PS的CT表现,观察其位置、大小、形态、内部结构、边缘征象、外周改变及增强表现,总结其CT影像特征。结果:12例PS中,男8例,女4例,年龄最大62岁,最小2岁;平均20.21岁。10例位于左肺下叶,2例位于右肺下叶,9例叶内型,3例叶外型。影像表现6例异常的肺实质内含有充液或不充液的囊腔,3例可见囊或结节环绕的低密度区,2例见多发扩张的血管,1例示软组织密度肿块。12例对比剂增强螺旋CT扫描10例显示了病变的异常血管。结论:PS多具肺内感染性病变影像表现。对比剂增强螺旋CT扫描是PS诊断及鉴别诊断的重要手段。
Objective: To investigate the CT findings and characteristics of pulmonary sequestration (PS). Methods: The CT findings of 12 cases of clinically and pathologically confirmed PS were retrospectively analyzed. The location, size, shape, internal structure, marginal signs, peripheral changes and enhancement were observed. The CT features were summarized. Results: PS in 12 cases, 8 males and 4 females, the oldest 62 years old, the youngest 2 years; an average of 20.21 years. Ten cases were located in the left lower lobe, two in the right lower lobe, nine in the leaf, and three in the leaf. 6 cases of abnormal lung parenchyma included filled or non-filled cysts, 3 cases of low-density area around the capsule or nodules, 2 cases of multiple dilation of blood vessels, and 1 case of soft tissue density mass. Twelve contrast-enhanced helical CT scans showed abnormal vessels in 10 cases. CONCLUSIONS: PS has many imaging manifestations of pulmonary infection. Contrast enhanced helical CT scan is an important means of diagnosis and differential diagnosis of PS.