Pulmonary Unit, Ospedale "C. e G. Mazzoni", Ascoli Piceno, Italy.
Department of Hematology, Oncology, Rheumatology, Immunology and Pulmonology, University of Tübingen, Tübingen, Germany.
Respiration. 2018;95(6):383-391. doi: 10.1159/000488910. Epub 2018 Jun 12.
The lung biopsy in interstitial lung disease (ILD) represents an important diagnostic step when the clinical and radiological data are insufficient for a firm diagnosis. A growing body of evidence suggests the utility of transbronchial lung cryobiopsy (TBLC) in the diagnostic algorithm of ILD as it allows, compared to transbronchial lung biopsy with conventional forceps, a better identification of complex histological patterns - such as usual interstitial pneumonia - and can provide information which has a clinical impact on the multidisciplinary discussion similar to that provided by surgical lung biopsy. Performed correctly, it appears to have a better safety profile than surgery. The decision to perform a lung biopsy should be a multidisciplinary decision process where it is felt that there is sufficient diagnostic doubt after a careful clinical evaluation including review of the computed tomograms of the thorax. The presence of severe pulmonary hypertension (> 50 mm Hg), poor lung function (FVC < 50%), or dismissed gas transfer (DLCO of < 35%) are considered relative contraindications for TBLC. Anticoagulants and antiplatelet drugs should be discontinued for the minimum period required for the specific drugs. The greatest consideration should be given to ensure the biopsy is performed safely and we recommend the use of either an endotracheal tube or rigid bronchoscopy. Deep sedation or general anesthesia allow better control of the procedure and a better patient experience. Prophylactic balloon blockers should be used to tamponade any bleeding and also to prevent overspill of blood from the segment that is being sampled. The procedure should be performed under fluoroscopy to ensure that samples are ideally obtained about 10 mm from the pleural edge. The cryoprobe is activated for about 5 s for the first biopsy and then adjusted according to the sample size obtained. With a careful standardized approach it is possible to obtain good-quality lung specimens for diagnosis in a safe manner.
在间质性肺疾病 (ILD) 中,当临床和影像学数据不足以明确诊断时,肺活检是一个重要的诊断步骤。越来越多的证据表明,经支气管肺冷冻活检 (TBLC) 在 ILD 的诊断算法中具有实用性,因为与传统活检钳的经支气管肺活检相比,它可以更好地识别复杂的组织学模式,如寻常性间质性肺炎,并能提供对多学科讨论具有临床影响的信息,类似于外科肺活检提供的信息。如果正确进行,它似乎比手术更安全。进行肺活检的决定应该是一个多学科的决策过程,在仔细的临床评估后,包括对胸部计算机断层扫描的审查,认为存在足够的诊断疑虑。严重肺动脉高压 (> 50 毫米汞柱)、肺功能差 (FVC < 50%) 或气体转移排除 (DLCO < 35%) 被认为是 TBLC 的相对禁忌症。抗凝剂和抗血小板药物应在具体药物所需的最短时间内停用。最大的考虑因素应该是确保活检安全进行,我们建议使用气管内管或硬性支气管镜。深度镇静或全身麻醉可更好地控制手术过程,并为患者提供更好的体验。应预防性使用球囊阻塞器来填塞任何出血,并防止正在取样的节段的血液溢出。应在透视下进行该程序,以确保样本理想地从胸膜边缘获得约 10 毫米。对于第一次活检,冷冻探针激活约 5 秒,然后根据获得的样本大小进行调整。通过仔细的标准化方法,可以安全地获得用于诊断的高质量肺标本。
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