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孤立性肺结核结节的CT诊断 附14例报告 |
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孤立性肺结核结节的CT诊断(附14例报告)摘要 目的:提高对孤立性肺结核结节的CT诊断及鉴别诊断能力。方法 : 对手术病理证实的14例孤立性肺结核结节资料进行回顾性分析,14例均先行常规CT扫描后,其中HRCT扫描4例,薄层CT增强扫描4例。结果:结节密度均匀10例,斑状及环状钙化3例,空洞1例。边缘光滑规则9例,浅分叶4例,不规则1例。4例增强CT值增幅8-22Hu。结论:合理应用CT检查方法、重点观察结节的内部结构及边缘情况有助于孤立肺结核结节的诊断及鉴别诊断。关键词结核肺孤立结节体层摄影术 X线计算机Abstract Objective:To improve the ability of CT diagnosis and differential diagnosis for solitary pulmonary tubercular nodules(SPTN).Methods: The dada of l4 cases with SPTN pathologicallyproved were retrospectively analyzed.All 14 cases were underwent spiral CT in advance,including high resolution CT(HRCT)in 4,thinsection spiral CT scan with contrast enhancement in 4.Results: The CT findings that the nodule homogeneous density were fonud in 10 nodules,macular or annulal calcification in 3 nodules,cavum in 1 nodule,regular smooth margine in 9 nodules,shallow lobulation in 4 nodules and irregulation in 1 nodule,the variety of CT value beforeandafter enhancement from 8 Hu to 22 Hu in 4 nodules.Conclusion Reasonable application of CT techniques,intensive observation of internal constitution and margine of nodules were important in diagnosis and differential diagnosis for SPTN.Key words Tuberclosis pulmonary Solitarynodule TomographyX-ray computed 孤立性肺结节是肺内常见的影像术语,而且多数良、恶性病变均可表现为孤立肺结节。通过本组资料分析,旨在提高对孤立性肺结核结节的认识,更好地与其它良性及恶性结节鉴别,力求使诊断更加准确。1材料与方法本组14例,男性11例,女性3例。年龄30~68岁,平均年龄45.8岁。健康体检发现肺内结节7例,外伤后胸部CT发现肺结节2例,咳嗽、咳痰伴胸痛3例,痰中带血2例。检查均使用美国GE公司hispeedCT/I全身CT机。14例均先行常规CT扫描,层厚10mm,其中结节HRCT扫描4例,薄层CT增强扫描4例,层厚3mm。增强造影剂采用碘海醇64.7g100mL,高压注射器肘静脉团注。2结果14例孤立性肺结核结节分布于右肺上叶后段4例,中叶1例,下叶背段及外基底段各2例;左肺上叶后段2例,舌叶l例,下叶背段及外侧基底段各1例。结节长径10~18mm。形态表现为圆形3例,椭圆形10例,不规则形1例。密度均匀10例(图1),不均匀4例,其中斑状钙化2例(图2)、环状钙化1例,空洞1例。边缘光滑规则9例,浅分叶4例,不规则1例。薄层CT增强扫描4例,CT值增幅8-22Hu(图3)。术前诊断肺结核6例,肿瘤4例,错构瘤1例,结节待诊3例。图1右肺中叶内段结节,大小约2.0×1.5×1.8cm3,密度均匀,边缘浅分叶。图2右肺下叶外基底段结节,大小约1.5×1.2×1.0cm3,其内密度不均,见斑状钙化,结节边缘规则。图3右肺下叶前段结节,大小约1.5×1.2×1.3cm3,密度均匀,边缘浅分叶,平扫CT值24.45Hu,增强CT值41.55Hu。3讨论3.1 孤立性肺结核结节的病理 按肺结核五大分类法,结核结节属浸润型肺结核的一种特殊类型。结节[1] [2] 下一页 上一个医学论文: 某钢铁企业粉尘与尘肺的流行病学调查分析 下一个医学论文: 糖尿病与肺结核的治疗
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