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  • Title: Integration of TBNA and TCNA in the diagnosis of peripheral lung nodules. Influence on staging.
    Author: Gasparini S, Zuccatosta L, Zitti P, Bichi Secchi E, Ferretti M, Gusella P.
    Journal: Ann Ital Chir; 1999; 70(6):851-5. PubMed ID: 10804661.
    Abstract:
    Although transbronchial and percutaneous approaches to peripheral pulmonary lesions (PPL) are widely diffused, effective and safe diagnostic techniques, no standardised strategy yet exists that defines the specific role of each in this clinical setting. With the aim of defining the role of each approach and of verifying if the two techniques are alternative or may be integrated in a logical diagnostic sequence based on the advantages and the limits of each biopsy method, the authors analysed their experience with the integrated use of transbronchial and percutaneous approach to PPL performed on 1,680 consecutive patients affected by PPL. The procedure used was as follows: 1) bronchoscopy with exploration of the bronchial tree and transbronchial needle aspiration (TBNA) of hilar/mediastinal lympho nodes for staging N factor followed by TBNA and transbronchial pulmonary biopsy (TBPB) of the PPL under fluoroscopic guidance and immediate cytological assessment (ICA); 2) if TBNA was diagnostic, the procedure was stopped; if not, a second pass with the needle was performed and then the bronchoscope removed; 3) if the second TBNA was not diagnostic, percutaneous approach (PCNA) with ICA was performed up to a maximum of three needle passes. Diagnostic sensitivity for malignant lesions was: 50.0% for TBPB, 70.1% for TBNA, 76.0% for TBPB and TBNA together, 92.8% for PCNA, and 95.0% overall. The percentage of benign nodules correctly defined was 43.0% for TBPB, 16.7% for TBNA, 47.8% for PCNA. Examination of the upper airways and bronchial tree was positive for lesions endoscopically visible in 11.4% of cases. TBNA of hilar/mediastinal lympho nodes was positive for metastatic involvement in 43.9%. The authors' experience demonstrates that transbronchial and percutaneous approaches must be considered complementary and that their integrated use not only increases diagnostic yield but also permits important information to be obtained for the staging of lung cancer. The creation of teams able to utilise both approaches with the cytopathologist present for ICA should be encouraged in order to optimise the diagnostic management of PPL.
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