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Background
Transbronchial needle aspiration (TBNA) of peripheral lung nodules can be difficult with conventional devices due to their limited flexibility. A promising new technology for accessing these lesions is the PeriView FLEX TBNA device, which has a flexible spiral‐grooved needle. The present study reports the unique cytologic features, diagnostic value, and potential pitfalls of PeriView FLEX...
Background
In advanced non–small cell lung cancer (NSCLC), cytologic specimens from transbronchial needle aspiration (TBNA) or transthoracic needle aspiration are often the only cancer tissue material available for the analysis of programmed death ligand 1 (PD‐L1) expression. This study was aimed at assessing the concordance of PD‐L1 expression in histologic and cytologic samples and at evaluating...
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