Table 3.
Comparison of CT imaging characteristics between KLA and non-KLA reported from Hong Kong (38), Korea (30), Singapore (41), Taiwan (35), and China (1).
| Parameters | Hong Kong (38) (n = 161) | Korea (30) (n = 129) | Singapore (41) (n = 131) |
China (1) (n = 110) | Taiwan (35) (n = 248) |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| KLA (140) | Non-KLA (21) | P value | KLA (59) | Non-KLA (70) | P value | KLA (92) | Non-KLA (39) | P value | KLA (73) | Non-KLA (37) | P value | KLA (171) | Non-KLA (77) | P value | |
| No. of abscess | 0.01 |
<0.05 | |||||||||||||
| Solitary (n = 1) | — | — | — | — | — | — | 73 (79.3%) | 22 (56.4%) | 60 (82.2%) | 30 (81.1%) | NS | 125 (73.1%) | 45 (58.4%) | ||
| Multiple (n > 1) | — | — | — | — | — | — | 19 (20.7%) | 17 (43.6%) | 13 (17.8%) | 7 (18.9%) | NS | 46 (26.9%) | 32 (41.6%) | ||
| Location | 0.312 | 0.01 | NS | ||||||||||||
| Right | 97 (69.3%) | 15 (71.4%) | 0.42 | 41 (69.5%) | 49 (70.0%) | 76 (82.6%)§ | (61.5%)§ | 47 (64.4%) | 24 (64.9%)* | NS | 128 (74.9%) | 52 (67.5%) | |||
| Left | 31 (22.1%) | 4 (19.1%) | 0.38 | 14 (23.7%) | 16 (22.9%) | § | § | 11 (15.1%) | 5 (16.7%)* | NS | 34 (19.9%) | 19 (24.7%) | |||
| Both | 12 (8.6%) | 2 (9.5%) | 0.44 | 4 (6.8%) | 5 (7.1%) | 16 (17.4%) | 15 (38.5%) | 2 (2.7%)* | 1 (2.7%)* | NS | 9 (5.2%) | 6 (7.8%) | |||
| <5,72 (42.1%); | <5,36 (46.8%); | NS | |||||||||||||
| Size (cm) | 6.5 ± 2.8# | 7.4 ± 2.9# | 0.19 | — | — | — | 7.3 ± 2.8# | 7.8 ± 2.8# | 0.35 | 7.4 ± 2.4# | 7.4 ± 3.2# | NS | 5–10,87 (50.9%) | 5–10,37 (48.1%) | |
| Septations within abscess | 0.103 | 0.01 | — | ||||||||||||
| Unilocular | — | — | — | 9 (15.3%) | 19 (27.1%) | 5 (5.4%) | 11 (28.2%) | — | — | — | — | — | |||
| Multilocular | 84 (60%) | 13 (61.9%) | 0.43 | 50 (84.7%) | 51 (72.9%) | 87 (94.6%) | 28 (71.8%) | 41 (38.7%) | 20 (35.7%) | NS | — | — | |||
| Gas-formation in abscess | 13 (9.3%) | 2 (9.5%) | 0.49 | 52 (89.7%) | 64 (91.4%) | 0.536 | 11 (28.2%) | 6 (15.4%) | 0.58 | 24 (32.9%) | 5 (13.5%) | <0.05 | 7 (4.1%) | 4 (5.2%) | NS |
| Septal enhancement | — | — | — | 44 (74.6%) | 41 (58.6%) | 0.056 | — | — | — | 30 (41.1%) | 6 (16.2%) | <0.05 | — | — | — |
| Rim-enhancement | 68 (48.6%) | 12 (57.1%) | 0.23 | 20 (33.9%) | 43 (61.4%) | 0.004 | — | — | — | 28 (38.4%) | 12 (32.4%) | NS | — | — | — |
| Pneumobilia | 9 (6.4%) | 0 (0.0%) | 0.12 | — | — | — | 1 (1.1%) | 5 (12.8%) | 0.01 | 7 (9.6%) | 3 (8.1%) | NS | — | — | — |
| Thrombophlebitis | 2 (1.4%) | 1 (4.8%) | 0.13 | — | — | — | 28 (30.4%) | 2 (5.1%) | <0.01 | — | — | — | — | — | — |