Table 4.
Lymph node dissections and histopathological findings
| Lymph node excision (n = 23) | CLND (n = 287) | CLND + unilateral LLND (n = 168) | CLND + bilateral LLND (n = 82) | |
|---|---|---|---|---|
| Reason for lymph node dissection (n = 490) | ||||
| Prophylactic | 1 (7) | 191 (70·5) | 47 (33·6) | 22 (34) |
| Diagnostic | 10 (67) | 31 (11·4) | 11 (7·9) | 9 (14) |
| Therapeutic | 4 (27) | 49 (18·1) | 82 (58·6) | 33 (52) |
| N category | ||||
| N0 | 12 (52) | 176 (61·3) | 49 (29·2) | 23 (28) |
| N1a | 4 (17) | 65 (22·6) | 23 (13·7) | 11 (13) |
| N1b | 1 (4) | 5 (1·7) | 81 (48·2) | 43 (52) |
| Nx | 2 (9) | 22 (7·7) | 3 (1·8) | 1 (1) |
| Unknown | 4 (17) | 19 (6·6) | 12 (7·1) | 4 (5) |
| No. of lymph nodes resected (n = 424) * | 3 (1–7) | 8 (5–12) | 27·5 (16·5–45·8) | 35·5 (21·8–68·3) |
| No. of tumour‐positive lymph nodes (n = 466) * | 0 (0–3) | 0 (0–1) | 3 (0–14) | 3 (0–16) |
| Lymph node ratio (n = 455) * | 0 (0–0·75) | 0 (0–0) | 0·15 (0–0·45) | 0·14 (0–0·34) |
Values in parentheses are percentages unless indicated otherwise;
*
values are median (i.q.r.). CLND, central lymph node dissection; LLND, lateral lymph node dissection.