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L. Wang
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MINI 36 - Imaging and Diagnostic Workup (ID 163)
- Event: WCLC 2015
- Type: Mini Oral
- Track: Screening and Early Detection
- Presentations: 1
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MINI36.09 - CT-Guided Cutting Needle Lung Biopsy Using 'Liquid Withdraw' Technique: Prominently Reduced Incidence of Pneumothorax (ID 1411)
19:15 - 19:20 | Author(s): L. Wang
- Abstract
- Presentation
Background:
CT-guided cutting needle lung biopsy is important for the diagnosis of lung cancer. The co-axial method is now widely used. However, co-axial method failed to decrease the incidence of pneumothorax. This study is to investigate whether our new-developed “Liquid withdraw” technique (to inject small amount of lidocaine during withdraw of the needle) can reduce incidence of pneumothorax when combined with co-axial technique. Figure 1 Fig.1.What is liquid withdraw
Methods:
From Jan 2013 to Dec 2014, We retrospectively studied 38 CT-guided percutaneous lung biopsy using co-axial and liquid withdraw techniques. The pathologies and complications secondary to biopsy procedure (pneumothorax, bleeding and hemoptysis) were noted. Pneumothorax was graded as mild, moderate, and severe.
Results:
37 cases was diagnosed out of 38 biopsies, of which 23 cases were adenocarcinoma (21 patients consented EGFR mutation test, and 15 cases had EGFR mutaions)，2 squamous cell carcinoma, 1 non-small cell lung cancer (cannot be further classified after IHC), 1 small-cell lung cancer, 2 primary lung cancer of other types, 5 metastatic lung cancer and 3 benign diseases. 4 cases (10.5%) happened pneumothorax (all were mild pneumothorax)，bleeding during biopsy happened in 1 (2.6%) case, 6 cases with a small amount of hemoptysis（15.8%）. No infection, tumor implantation or aeroembolism happened. Figure 1 Fig.2. A case of CT-guided cutting needle lung biopsy using “Liquid Withdarw” technique A: The co-axial inducer needle is located at the margin of the lesion B&C:after biopsy, the lidocaine can be seen in the needle passage and no pnemothorax is found.
Conclusion:
CT-guided percutaneous lung biopsy using co-axial and liquid withdraw is an accurate, safe，reliable technique. Compared to co-axial technique without liquid withdraw, the incidence of pneumothorax was reduced from approximately 35% to 10.5%. More studies according to liquid withdraw technique will be conducted in our future work.
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