Table 2. Details of rebiopsy sites, tissue specimens and the prevalence of T790M.
| Site | Procedure | Specimen No. | T790M (+) | Prevalence |
|---|---|---|---|---|
| Right chest wall | echo-guided biopsy | 1 | 0 | 0% |
| Mediastinum LN | VATS lymphadenectomy | 1 | 0 | 0% |
| Right hip skin | Excisional biopsy | 1 | 0 | 0% |
| CSF | lumbar puncture | 2 | 0 | 0% |
| MPE | Thoracentesis | 18 | 8 | 44.4% |
| Lung | 6 CT-guided biopsy 7 Echo-guided biopsy 3 Bronchoscopic brushing 1 Bronchoscopic biopsy 1 VATS lobectomy 1 autopsy |
19 | 12 | 63.2% |
LN: lymph node, CSF: cerebrospinal fluid, MPE: malignant pleural effusion, CT: computer tomography, VATS: video-assisted thoracic surgery.