AIM: Percutaneous transthoracic needle biopsy (PTNB), an alternative to bronchoscopic confirmation of lung lesions, is today being associated with a risk of pneumothorax and hemorrhage. Further, there are no data on the possible risk of malignant disease spreading to the pleura at the site of the PTNB. Previous studies have dealt with this risk in stage I non-small cell lung cancer only. The aim of this study was thus to assess the risk of pleural recurrence for all types of lung lesions. Secondary objectives included assessment of diagnostic yield and safety with respect to the incidence of pneumothorax and hemorrhage. METHODS: Clinical data of all patients from the University Hospital in Pilsen who had undergone PTNB of lung lesions between 1.1.2018 and 31.12.2022 were included in this retrospective study. RESULTS: Following PTNB, ipsilateral pleural effusion occurred in 4.8% of patients without prior pleural infiltration. The effusion was confirmed as malignant in one patient (0.7%). Diagnostic yield of the method was 86.6%. We recorded pneumothorax or hemorrhage in the lung parenchyma or pleural space requiring medical intervention in 3.4% and 1.1% of patients, respectively. CONCLUSION: In our study, percutaneous transthoracic needle biopsy of lung lesions showed high sensitivity and low degree of acute complications requiring an invasive solution. The risk of pleural recurrence after a biopsy was very low. Consequently, we continue to consider this method to be an alternative to bronchoscopy biopsies.

Department of Imaging Methods Faculty of Medicine Pilsen Charles University University Hospital in Pilsen Pilsen Czech Republic

Department of Pneumology and Phthisiology Faculty of Medicine Pilsen Charles University University Hospital in Pilsen Pilsen Czech Republic

Laboratory of Cancer Treatment and Tissue Regeneration Biomedical Center Faculty of Medicine Pilsen Charles University Pilsen Czech Republic

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