Table 1.
Tumour staging (n = 331)
| Tumour staging n (%) | |
|---|---|
| Staging on pre-operative imaging | |
| Median tumour diameter (mm) | 23 (10–40)a |
| Portal vein invasion | 64 (19) |
| Hepatic artery invasion | 16 (5) |
| Lobar atrophy | 58 (17) |
| Lymph node enlargement | 20 (6) |
| Bismuth–Corlette staging | |
| I | 12 (4) |
| II | 47 (14) |
| III | 242 (73) |
| IV | 30 (9) |
| DeOliveira staging | |
| Bile Duct (B) | |
| B1 | 12 (4) |
| B2 | 47 (14) |
| B3-R | 132 (40) |
| B3-L | 110 (33) |
| B4 | 30 (9) |
| Tumour size (T) | |
| T1 | 30 (9) |
| T2 | 126 (38) |
| T3 | 175 (53) |
| Tumour formb | |
| Sclerosing | 111 (43) |
| Mass | 116 (45) |
| Mixed | 21 (8) |
| Polypoid | 10 (4) |
| Involvement of the portal vein (PV) | |
| PV0 | 267 (81) |
| PV1 | 3 (1) |
| PV2 | 12 (3) |
| PV3 | 49 (15) |
| PV4 | 0 (0) |
| Involvement of the hepatic artery (HA)c | |
| HA0 | 331 (100) |
| HA1 | 0 (0) |
| Lymph nodes (n) | |
| N0 | 195 (59) |
| N1 | 136 (41) |
| Metastases (M) | |
| M0 | 331 (100) |
| M1 | 0 (0) |
a
In patients with available data (n = 238).
b
The data were not available in 73 (22%) patients.
c
Patients requiring an arterial resection were excluded from the study.