Contrast-enhanced multidetector-row computed tomography can predict pathological findings of acute appendicitis in children.

AIMS

To retrospectively evaluate the correlation between multidetector-row computed tomography findings of acute appendicitis and the pathological status of acute appendicitis, and evaluate the capability of multidetector-row computed tomography to predict the pathological status of acute appendicitis in children.

METHODS

The presence of a distended appendix (>6 mm in transverse diameter) was used as a primary sign to indicate the presence of appendiceal inflammation. The presence of appendiceal wall thickening (>1 mm) and enhanced appendiceal wall continuity were also used as predictive findings to reflect the degree of progression of acute appendicitis on multidetector-row computed tomography findings. The findings of each individual case were classified into four grades. The final pathological diagnosis was classified into four groups: normal findings, only mucosal inflammation, inflammation with intramural spreading, and gangrenous. The relationship between the pathological grades and computed tomography grades was analyzed using Spearman's rank correlation test.

RESULTS

Four of six cases in Grade 0 reflected normal appendiceal findings (66.7%) and 3 of 5 cases in Grade I reflected only mucosal inflammation status (60.0%). Forty-four of 51 cases in Grade II reflected intramural inflammation status (86.3%), and 40 of 57 cases in Grade III reflected gangrenous status (70.2%). The multidetector-row computed tomography grade was significantly correlated to the pathological grade with Spearman's rank correlation coefficient of 0.689 ( < 0.001).

CONCLUSIONS

There was a close relationship between the multidetector-row computed tomography imaging findings and the pathological findings. This preoperative information is extremely useful for decision-making in the treatment strategy for acute appendicitis in children.