Table 1 Clinical characteristics associated with sentinel lymph node detection
SLN-negative group (n = 17) | SLN-positive group (n = 48) | p | |
|---|---|---|---|
Median age (years) | 70 (IQR 65–77) | 65 (IQR 61–72) | 0.06 |
Female sex | 2 (11.8) | 24 (50) | 0.006 |
Smoking use | 15 (88.2) | 36 (75.0) | 0.25 |
DLCO (%) | 64.7 ± 16.7 | 77.6 ± 17.2 | < 0.01 |
FEV1/FVC (%) | 60.8 ± 14.5 | 69.0 ± 11.7 | 0.02 |
FEV1 (%) | 77.3 ± 20.9 | 90.6 ± 20.2 | 0.02 |
Lobe Right upper Right middle Right lower Left upper Left lower | 3 (17.6) 2 (11.8) 5 (29.4) 5 (29.4) 2 (11.8) | 17 (35.4) 2 (4.2) 11 (22.9) 16 (33.3) 2 (4.2) | 0.42 |
Nodule density Solid Subsolid | 15 (88.2) 2 (11.8) | 37 (77.1) 11 (22.9) | 0.32 |
Degree of emphysema Light-moderate Severe | 8 (47.1) 9 (52.9) | 40 (83.3) 8 (16.7) | 0.003 |
Extent of operation Segmentectomy Lobectomy | 10 (58.8) 7 (41.2) | 22 (45.8) 26 (54.2) | 0.36 |
Surgical approach VATS RATS Open thoracotomy | 13 (76.5) 4 (23.5) 0 (0) | 40 (83.3) 3 (6.3) 5 (10.4) | 0.07 |
Marking Method Transpleural ENB | 6 (35.3) 11 (64.7) | 8 (16.7) 40 (83.3) | 0.11 |
SUVmax SUVmax < 3.5 SUVmax ≥ 3.5 | 7 (41.2) 10 (58.8) | 20 (41.7) 28 (58.3) | 0.72 |