CT-Guided Percutaneous Pulmonary Biopsy With Spring Core Biopsy Nee-Dle

Objective To evaluate the diagnostic accuracy in terms of surface location, the needle, sampling method and the character of lesion. To investigate the complication of CT-guided percutaneous pulmonary biopsy with spring core biopsy needle.Materials and Methods During Jun. 1998~Dec. 2001,150 patients of percutaneous pulmonary biopsy were performed using spring core biopsy needle under CT guid-anceCmean age,52. 5 yeasjlll men and 49 women). The mean size was 4. 2cm(range,2 -12cm). CT scans were performed created the surface location. The puncture was done with the CT guidance. When the needle reached the desired site, a tissue specimens was taken.Results Two hundred lung biopsies were performed in 150 cases and the satisfactory tissue specimens were obtained in 148 cases. The mean number of needle passes was 1. 3(range, 1-4). The sensitivity was 98. 7% (148/150). The diagnostic accuracy for malignant tumor and benign lesion was 93. 2%(82/88) and 88. 7%(55/62), respectively. The false negative was 6. 8% in malignant tumor and there was no false positive. The false negative was 11. 3% in benign lesion. The overall diagnostic accuracy was 91. 3% (137/150) and the false negative was 9. 7%. Sixteen cases occurred pneumothorax (10. 7%), 2 of them needed chest tube drainage. Slight hemoptysis were seen in 13 patients (8.7%).Conclusion The diagnostic accuracy can be improved using the CT guiding spring core biopsy needle for percutaneous pulmonary biopsy for both malignant tumor and benign lesion. Especially for benign lesion the diagnostic accuracy with spring core biopsy needle was distinctive higher than that with fine needle aspiration.