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).

ParametersHong Kong (38) ( ) Korea (30) ( ) Singapore (41) ( )
China (1) ( )Taiwan (35) ( )
KLA (140)Non-KLA (21)P valueKLA (59)Non-KLA (70)P valueKLA (92)Non-KLA (39)P valueKLA (73)Non-KLA (37)P valueKLA (171)Non-KLA (77)P value

No. of abscess0.01
<0.05
 Solitary ( ) 73 (79.3%)22 (56.4%)60 (82.2%)30 (81.1%)NS125 (73.1%)45 (58.4%)
 Multiple ( ) 19 (20.7%)17 (43.6%)13 (17.8%)7 (18.9%)NS46 (26.9%)32 (41.6%)
Location0.312 0.01NS
 Right 97 (69.3%)15 (71.4%)0.4241 (69.5%)49 (70.0%)76 (82.6% (61.5% 47 (64.4%) 24 (64.9%)*NS128 (74.9%)52 (67.5%)
 Left 31 (22.1%)4 (19.1%)0.3814 (23.7%)16 (22.9%) 11 (15.1%)5 (16.7%)*NS34 (19.9%)19 (24.7%)
 Both 12 (8.6%)2 (9.5%)0.444 (6.8%)5 (7.1%)16 (17.4%)15 (38.5%)2 (2.7%)*1 (2.7%)*NS9 (5.2%)6 (7.8%)
<5,72 (42.1%);<5,36 (46.8%); NS
Size (cm) 0.19 0.35 NS 5–10,87 (50.9%) 5–10,37 (48.1%)
Septations within abscess 0.1030.01
 Unilocular 9 (15.3%)19 (27.1%)5 (5.4%)11 (28.2%)
 Multilocular 84 (60%)13 (61.9%)0.4350 (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%)0.4952 (89.7%)64 (91.4%)0.53611 (28.2%)6 (15.4%)0.5824 (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-enhancement68 (48.6%)12 (57.1%)0.2320 (33.9%)43 (61.4%)0.00428 (38.4%)12 (32.4%)NS
Pneumobilia9 (6.4%)0 (0.0%)0.12 1 (1.1%)5 (12.8%)0.017 (9.6%)3 (8.1%)NS
Thrombophlebitis2 (1.4%)1 (4.8%)0.1328 (30.4%)2 (5.1%)<0.01

—: There were no data in these references; locations of right and left are not mentioned separately in reference [41]; means ± standard; there were other locations of abscess in addition to those mentioned in reference [1].