Table 3.
CT characteristics
| CT findings | All patients (n = 201) | Uncomplicated appendicitis (n = 106) | Complicated appendicitis (n = 95) | p value |
|---|---|---|---|---|
| Appendiceal diameter (mm) | 12.0 ± 2.7 | 11.1 ± 2.3 | 13.1 ± 2.8 | < 0.001 |
| Tip appendiceal diameter (n = 186) (mm) | 10.5 ± 2.7 | 9.8 ± 2.3 | 11.4 ± 3.0 | < 0.001 |
| Mucosal hyperenhancement | 91 (45.3) | 45 (42.5) | 46 (48.4) | 0.396 |
| Mucosal enhancement defect | 101 (50.2) | 22 (20.8) | 79 (83.2) | < 0.001 |
| Intraluminal appendicolith | 74 (36.8) | 24 (22.6) | 50 (52.6) | < 0.001 |
| Appendicolith causing obstruction | 57 (28.6) | 18 (17.1) | 39 (41.5) | < 0.001 |
| Fat stranding | < 0.001 | |||
| None | 5 (2.5) | 4 (3.8) | 1 (1.1) | |
| Mild | 43 (21.4) | 41 (38.7) | 2 (2.1) | |
| Moderate–severe | 153 (76.1) | 61 (57.5) | 92 (96.8) | |
| Phlegmon | 11 (5.5) | 1 (0.9) | 10 (10.5) | 0.003 |
| Fluid collection | 24 (11.9) | 1 (0.9) | 23 (24.2) | < 0.001 |
| Size (mm) | 34.7 ± 14.9 | 21.4 ± 3.7 | 35.8 ± 14.9 | 0.193 |
| Extraluminal appendicolith | 6 (3.0) | 0 (0.0) | 6 (6.3) | 0.010 |
| Periappendiceal air | 41 (20.4) | 0 (0.0) | 41 (43.2) | < 0.001 |
| Periappendiceal fluid | 103 (51.2) | 30 (28.3) | 73 (76.8) | < 0.001 |
| Ascites | 60 (29.9) | 16 (15.1) | 44 (46.3) | < 0.001 |
| Small bowel dilatation | 17 (8.5) | 2 (1.9) | 15 (15.8) | < 0.001 |
| Diameter (cm) | 3.5 ± 0.4 | 3.4 ± 0.4 | 3.5 ± 0.5 | 0.508 |
| Small bowel thickening | 60 (29.9) | 13 (12.3) | 47 (49.5) | < 0.001 |
Those in brackets represent percentage unless specified otherwise