| CT imaging profiles | Diagnosis appendicitis | Patients (N) | Percentage appendicitis | |
|---|---|---|---|---|
| Absent | Present | |||
| None of the features | 571 | 10 | 581 | 2% |
| Completely visualised, thickened appendix with peri-appendiceal fat infiltration and appendiceal enhancement | 5 | 114 | 119 | 96% |
| Completely visualised, thickened appendix with peri-appendiceal fat infiltration | 4 | 30 | 34 | 88% |
| Completely visualised, thickened appendix with peri-appendiceal fat infiltration and appendicolith | 0 | 25 | 25 | 100% |
| Completely visualised, thickened appendix | 10 | 13 | 23 | 57% |
| Completely visualised, thickened appendix with peri-appendiceal fat infiltration and appendicolith and appendiceal enhancement | 1 | 20 | 21 | 95% |
| Completely visualised, thickened appendix and appendiceal enhancement | 4 | 16 | 20 | 80% |
| Completely visualised, thickened appendix with an appendicolith and appendiceal enhancement | 2 | 11 | 13 | 85% |
| Thickened appendix with peri-appendiceal fat infiltration and appendiceal enhancement | 0 | 10 | 10 | 100% |
| Completely visualised, thickened appendix and an appendicolith | 3 | 5 | 8 | 63% |
| Thickened appendix with peri-appendiceal fat infiltration | 2 | 2 | 4 | 50% |
| Thickened appendix with peri-appendiceal fat infiltration and appendicolith and appendiceal enhancement | 0 | 4 | 4 | 100% |
| Completely visualised appendix with peri-appendiceal fat infiltration and appendicolith and appendiceal enhancement | 0 | 3 | 3 | 100% |
| Completely visualised appendix with peri-appendiceal fat infiltration and appendiceal enhancement | 0 | 2 | 2 | 100% |
| Completely visualised appendix with peri-appendiceal fat infiltration | 1 | 1 | 2 | 50% |
| Completely visualised appendix with an appendicolith | 0 | 2 | 2 | 100% |
| Peri-appendiceal fat infiltration and appendicolith present | 0 | 2 | 2 | 100% |
| Completely visualised appendix and appendiceal enhancement | 0 | 1 | 1 | 100% |
| Peri-appendiceal fat infiltration | 0 | 1 | 1 | 100% |
| Appendicolith present | 0 | 1 | 1 | 100% |
| Completely visualised appendix with an appendicolith with peri-appendiceal fat infiltration | 0 | 1 | 1 | 100% |
| Thickened appendix with peri-appendiceal fat infiltration and appendicolith present | 0 | 1 | 1 | 100% |
| Thickened appendix with an appendicolith and appendiceal enhancement | 0 | 1 | 1 | 100% |
| Total | 603 | 276 | 879 | 31% |
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