Should endobronchial ultrasonography be part of the thoracic surgeon's armamentarium?

OBJECTIVE

The study objective was to determine the clinical usefulness and accuracy of endobronchial ultrasound-guided needle aspiration of mediastinal and hilar lymph nodes.

METHODS

A retrospective analysis of a thoracic surgery unit's experience was performed.

RESULTS

In a period of 19 months, 75 patients underwent the procedure (mean age = 65.5 +/- 1.6 years; male to female = 2:1) most commonly for mediastinal lymphadenopathy in the setting of diagnosed or suspected lung cancer. It was diagnostic in 68.9% after rapid on-site evaluation and 74.3% after final cytologic examination. The rapid on-site evaluation and final cytology results were discordant in 16.2% (P < .001). In 50 cases, the needle aspirate cytology could be compared with pathology results. The sensitivity and specificity for the diagnosis of cancer were 85% and 100%, respectively. The false-negative rate endobronchial ultrasound cytology was 8.1%. Mediastinal lymph node station 7 was most commonly biopsied. The stations with the highest diagnostic yield were: 11R, 3, 10L, and 7. Of the patients with a positive positron emission tomography scan with suspected clinical stage III lung cancer, cancer was downstaged in 40% after endobronchial ultrasound.

CONCLUSION

Endobronchial ultrasound-guided needle aspiration is a clinically useful minimally invasive option for lung cancer staging and evaluation of mediastinal lymphadenopathy. The procedure should be considered complementary to mediastinoscopy.