Tissue is the issue: Endobronchial Ultrasonography and EBUS-TBNA
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Direct real-time endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) using the convex probe endobronchial ultrasound (CP-EBUS) is a relatively new minimally-invasive and accurate technique for preoperative staging of NSCLC patients. Tissues obtained by EBUS-TBNA allow further analyses to be carried out and may help directing NSCLC patients to molecularely-based different therapies. The objective for this work was to investigate the feasibility of EBUS-TBNA for obtaining nodal tissue samples that can be utilized for IHC analysis. Patients with pN2-NSCLC were enrolled. M...
Direct real-time endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) using the convex probe endobronchial ultrasound (CP-EBUS) is a relatively new minimally-invasive and accurate technique for preoperative staging of NSCLC patients. Tissues obtained by EBUS-TBNA allow further analyses to be carried out and may help directing NSCLC patients to molecularely-based different therapies. The objective for this work was to investigate the feasibility of EBUS-TBNA for obtaining nodal tissue samples that can be utilized for IHC analysis. Patients with pN2-NSCLC were enrolled. Mediastinal LN specimens obtained by EBUS-TBNA in those patients underwent IHC staining for the expression of 6 cell cycle-related proteins (pRb, cyclin D1, p16, p53, p21, and Ki-67). Results revealed that immunohistochemical staining was feasible in all mediastinal nodal tissue samples. All the examined cases showed an abnormal expression of at least one of the studied 6 cell cycle proteins.In conclusion, EBUS-TBNA is an effective tool, not only for staging of LC, but also for obtaining mediastinal nodal tissue samples amenable for further evaluation.
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