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Table 2 Pathological types after CT guided lung puncture (343 cases)

From: The role of clinical characteristics and pulmonary function testing in predicting risk of pneumothorax by CT-guided percutaneous core needle biopsy of the lung

Diagnostic characteristics N (%)
Malignant 248 (72.3%)
 Adenocarcinoma 191 (55.7%)
 Squamous cell carcinoma 34 (9.9%)
 Small cell carcinoma 6 (1.7%)
 Metastasis from other tumor sites 6 (1.7%)
 Neuroendocrine tumor 4 (1.2%)
 Malignant pleural mesothelioma 3 (0.9%)
 Undifferentiated carcinoma 2 (0.6%)
 Adenosquamous carcinoma 1 (0.3%)
 Lymphoepithelioid carcinoma 1 (0.3%)
Benign 80 (23.3%)
 Chronic pneumonia 71 (20.7%)
 Alveolitis 2 (0.6%)
 Pulmonary hamartoma 2 (0.6%)
 Tuberculosis 2 (0.6%)
 Sclerosing pneumocytoma 2 (0.6%)
 Neurilemmoma 1 (0.3%)
Borderline 2 (0.6%)
 Solitary fibrous tumor 1 (0.3%)
 Inflammatory myofibroblastic tumor 1 (0.3%)
Non-diagnostic/inadequate 13 (3.8%)