The means of appendicular diameter, wall thickness and luminal width in the control group are 6.2 ± 1.2 mm; 2.2±0.6 mm and 2.0 ± 1.3 mm respectively versus 11.5 ± 3.0 mm, 3.4 ± 1.0 mm and 4.8±3.0 mm in acute appendicitis group, a significant difference with p < 0, 0001.