Table 1.
Preoperative data
| No histology n = 45,339 | Histology without IGBC n = 35,797 | IGBC n = 213 | p value | |
|---|---|---|---|---|
| Preoperative parameters age, (years)* | 48 (±16) | 55 (±16) | 70 (±11) | <0.05 |
| Gender | <0.05 | |||
| Male | 12,332 (27) | 14,323 (40) | 44 (21) | |
| Female | 32,992 (73) | 21,462 (60) | 169 (79) | |
| Missing data** | 15 (0) | 12 (0) | 0 (0) | |
| ASA | <0.05 | |||
| 1 | 25,634 (57) | 16,416 (46) | 50 (24) | |
| 2 | 16,830 (37) | 16,088 (45) | 118 (55) | |
| 3 | 2784 (6.1) | 3139 (8.8) | 41 (19) | |
| 4** | 80 (0.2) | 145 (0.4) | 4 (1.9) | |
| 5** | 11 (0) | 9 (0) | 0 (0) | |
| Jaundice*** | <0.05 | |||
| Yes | 2974 (6.6) | 3503 (9.8) | 35 (16) | |
| No | 42,365 (93) | 32,294 (90) | 178 (84) | |
| Indication for surgery | <0.05 | |||
| Biliary colic | 31,124 (69) | 16,488 (46) | 67 (32) | |
| Complication (cholecystitis, pancreatitis) | 14,079 (31) | 18,927 (53) | 144 (68) | |
| Acalculous cholecystitis** | 136 (0.3) | 382 (1.1) | 2 (0.9) | |
| Type of surgery | <0.05 | |||
| Acute | 11,637 (26) | 13,771 (39) | 105 (49) | |
| Elective | 23,589 (74) | 21,753 (61) | 107 (50) | |
| Vital indication** | 273 (0.8) | 273 (0.8) | 1 (0.5) |
Comparison of the three subgroups: gallbladders not submitted for histology (no histology), histology without IGBC (incidental gallbladder cancer) and IGBC
Values in parenthesis are percentages unless indicated otherwise
* Values are the mean (SD). ** Numbers not included in statistical analysis due to insufficient number. *** Bilirubin > 50 µmol/L and/or known bile duct stone