Evaluation of Clinical Alvarado Scoring System and CT Criteria in the Diagnosis of Acute Appendicitis

Table 1

The distribution of CT signs in patients with normal appendix and acute appendicitis.

Feature	Patients with normal appendix ()	Patients with acute appendicitis ()
(i) Appendiceal diameter	3.1 ± 0.8 mm, range: 2–5	8.5 ± 2.7 mm, range: 6–16
(ii) Mild-moderate inflammation	10/78 (12.8%)	12/39 (30.8%)
(iii) Severe inflammation	3/78 (3.8%)	19/39 (48.7%)
(iv) Free fluid	9/78 (11.5%)	15/39 (38.5%)
(v) Appendicolith	0/78 (0.0%)	13/39 (33.3%)