Table 3. Diagnostic yield, procedure time, and complication rate of US-guided PCNB for subpleural lung lesions.
| Variable | Total (N=572) | Small (N=72) | Medium (N=206) | Large (N=294) | P |
|---|---|---|---|---|---|
| Sample adequacy | 0.307 | ||||
| Adequate | 550 (96.2) | 67 (93.1) | 198 (96.1) | 285 (96.9) | |
| Inadequate | 22 (3.8) | 5 (6.9) | 8 (3.9) | 9 (3.1) | |
| Success rate | 0.079 | ||||
| Success | 474 (82.9) | 54 (75.0) | 168 (81.6) | 252 (85.7) | |
| Fail | 98 (17.1) | 18 (25.0) | 38 (18.4) | 42 (14.3) | |
| Accuracy | 0.366 | ||||
| Accurate | 517 (90.4) | 62 (86.1) | 189 (91.7) | 266 (90.5) | |
| Inaccurate | 55 (9.6) | 10 (13.9) | 17 (8.3) | 28 (9.5) | |
| Procedure time, min | 10.0±4.7 | 14.8±6.1 | 9.8±4.5 | 8.9±3.7 | <0.001* |
| Complication | 27 (4.7) | 8 (11.1) | 13 (6.3) | 6 (2.0) | <0.001* |
| Pneumothorax | 19 (3.3) | 6 (8.3) | 10 (4.9) | 3 (1.0) | |
| Hemorrhagic | 8 (1.4) | 2 (2.8) | 3 (1.4) | 3 (1.7) |
Except where otherwise indicated, data are numbered with percentage in parentheses. *, statistically significant. US, ultrasound; PCNB, percutaneous core needle biopsy.