Baseline Characteristics of Research Population
| Characteristic | n | %* |
| Prior cervical procedure | ||
| LLETZ | 38 | 50.7 |
| Conization | 8 | 10.7 |
| LLETZ and onization | 2 | 2.7 |
| None | 27 | 36.0 |
| Stage | ||
| IA1 or IA2 | 5 | 6.7 |
| IB1 | 64 | 85.3 |
| IB2, IIA1, IIA2, or IIB1 | 6 | 8.0 |
| Tumor histology primary tumor | ||
| Squamous cell carcinoma | 59 | 78.7 |
| Adenocarcinoma | 12 | 16.0 |
| Other | 4 | 5.3 |
| Tumor differentiation primary tumor | ||
| Grade 1 | 10 | 13.3 |
| Grade 2 | 35 | 46.7 |
| Grade 3 | 22 | 29.3 |
| Not defined | 8 | 10.7 |
| LVSI in primary tumor | ||
| Present | 33 | 44.0 |
| Absent | 42 | 56.0 |
| SLN procedure approach | ||
| Laparotomy | 1 | 1.3 |
| Conventional laparoscopy | 16 | 21.3 |
| Robot-assisted laparoscopy | 58 | 77.3 |
| SLN histology, per patient (n = 75)† | ||
| No tumor | 62 | 82.7 |
| Isolated tumor cells | 5 | 6.7 |
| Micrometastasis | 2 | 2.7 |
| Macrometastasis | 6 | 8.0 |
| SLN histology, per sentinel node (n = 136) | ||
| No tumor | 117 | 86.0 |
| Isolated tumor cells | 6 | 4.4 |
| Micrometastasis | 5 | 3.7 |
| Macrometastasis | 8 | 5.9 |
↵* Percentages are based on 75 cases unless otherwise noted.
↵† Categorization is based on severest metastatic SLN load present within each patient.
LLETZ = large loop excision of the transformation zone; LVSI = lymphovascular space invasion.
Median age, with range in parentheses, was 39.5 y (25.3–81.2 y); median body mass index, with range in parentheses, was 23.5 kg/m2 (18.3–41.0 kg/m2); and median follow-up, with range in parentheses, was 17 mo (0–47 mo).