Diagnostic Accuracy of Ultrasonography Guided Transthoracic Needle Aspiration for Diagnosing Lung Cancer


Sahdra Saragih,1 Noni Novisari Soeroso,1 Fajrinur Syarani,1 Fotarisman Zalukhu,2 Netty Delvrita Lubis3
1Departemen Pulmonologi dan Kedokteran Respirasi, Fakultas Kedokteran Universitas Sumatera Utara, RSUP H. Adam Malik, Medan
2Fakultas Kesehatan Masyarakat, Universitas Sumatera Utara
3Departemen Radiologi Fakultas Kedokteran Universitas Sumatera Utara, RSUP H. Adam Malik, Medan

Background: Imaging-guided transthoracic needle aspiration (TTNA) are widely applied for the diagnosis of intrathoracic lesions which are located nearer to the chest wall. TTNA with computed tomographic guidance is a well-established method but the main drawback is radiation exposure and the cost is relatively high, as compared with ultrasonography (US) guidance. The purpose of this study is to evaluate the accuracy of US-guided TTNA for diagnosing lung cancer.
Methods: US-guided TTNA were performed in 46 consecutive patients suspected of lung cancer on clinically and radiological work-up in Adam Malik Hospital on February 2015 to February 2016. The final diagnosis was based on cytology analysis or clinical follow-up.
Results: Of the 46 patients, 35 (76,1%) were male and mean age was 54,76 years. The US appearance of the mass, 35 (54,3%) were solid, 9 (19,6%) were heterogen, and 2 (4,3%) were anechoic. The cytology of US-guided TTNA C1, C2, C3, C4, and C5 were 7 (15,2%), 6 (13%), 1 (2,2), 2 (4,3%), and 30 (65,2%), respectively. The accuracy, sensitivity, specificity, were 87,87, 91,6%, and 77,7%. There were no pneumothorax or hemoptysis associated with US-guided TTNA.
Conclusion: US-guided TTNA is accurate and safe for diagnosing lung cancer in properly selected patients. (J Respir Indo. 2016; 36: 237-43)

Keywords: Transthoracic needle aspiration, accuracy, ultrasonography, lung cancer

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