Japanese Journal of Clinical Oncology 30:259-262 (2000)
© 2000 Foundation for Promotion of Cancer Research
Computed Tomographic Fluoroscopy-guided Transthoracic Needle Biopsy for Diagnosis of Pulmonary Nodules
1Department of Thoracic Diseases, Tochigi Cancer Center, Togichi and 2First Department of Internal Medicine, Showa University School of Medicine, Tokyo, Japan
Background: The purpose of this study was to evaluate the usefulness of computed tomographic (CT) fluoroscopy-guided transthoracic needle biopsy (TTNB) with an 18-gauge automatic biopsy gun for the diagnosis of pulmonary nodules.
Methods: Between March 1996 and January 1998, 50 patients in whom pulmonary lesions could not be diagnosed cytopathologically with fiberoptic bronchoscopy or were not clearly visualized with fluoroscopy underwent CT fluoroscopy-guided TTNB.
Results: Final pathological diagnoses were 23 lung carcinomas, five pulmonary metastases and 22 benign lesions. Sufficient tissue for analysis was obtained from 48 of the 50 lesions (96%). The overall diagnostic yield of CT fluoroscopy-guided TTNB was 90%. The sensitivity, specificity and accuracy for malignancy were 89%, 100% and 94%, respectively. In 20 of the 22 cases (91%) of benign lesions, histological analysis yielded correct and specific diagnoses. Complications occurred in 22 of the 50 cases (44%). The most common complication was pneumothorax, which occurred in 21 of the 50 cases (42%). Chest tube insertion was required in 6 (12%).
Conclusions: Although CT fluoroscopy could not decrease the complication rate, CT fluoroscopy-guided TTNB with an automatic biopsy gun appears to be a promising technique for diagnosing pulmonary lesions, particularly benign lesions.
+ For reprints and all correspondence: Takashi Hirose, First Department of Internal Medicine, Showa University School of Medicine, 1–5–8 Hatanodai, Shinagawa, Tokyo 142-8666, JapanAbbreviations: CT, computed tomography; TTNB, transthoracic needle biopsy; US, ultrasonography
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