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Transthoracic needle biopsy (TNB) is a fast and safe method used to establish definitive diagnosis for most thoracic lesions, whether the lesion is located in the pleura, the lung parenchyma, or the mediastinum. Diffuse disease and solitary lesions are equally approachable.TNB can avoid (when technically possible) more complex diagnostic interventions such asmediastinoscopy, thoracoscopy and exploratory thoracotomy. This article focuses on the advantages of TNB which is a safe, affordable and quick method to obtain histopathological confirmation of intrathoracic tumors. Material and MethodsThe study included a total of 235 cases over a period of 4 and a half years (01.01.2011-30.04.2015). We investigated the demographic and clinical parameters, the guiding methods, the histological results and the complications of the procedure. ResultsThe median age of the patients was 62 years and the predominent sex was male. We could obtain a tissue biopsy in 99% with a histopathological confirmation of 88%. The most frequently used guiding method was the previous CT scan of the patient and the anathomical landmarks (53%). The main histopathological result was squamous cell carcinoma. Conclusions TNB is generally a safe procedure with limited morbidity and extremely rare mortality. It is an affordable and quick method to obtain histopathological confirmation of intrathoracic tumors. Most TNBs can be performed by using local anesthesia without conscious sedation and virtually any location in the chest can be safely addressed. [ABSTRACT FROM AUTHOR]