Related Experiment Video
Updated: Aug 14, 2026

Murine Appendectomy Model of Chronic Colitis Associated Colorectal Cancer by Precise Localization of Caecal Patch
Published on: August 24, 2019
Do normal leucocyte count and C-reactive protein value exclude acute appendicitis in children?
1Department of Surgery. University of Turku, Finland. juha.gronroos@tyks.fi
Insights
In children, a normal leucocyte count and C-reactive protein (CRP) level do not rule out acute appendicitis. This differs from adult patients, highlighting a key diagnostic challenge in pediatric cases.
Area of Science:
- Pediatric Surgery
- Clinical Diagnostics
- Inflammatory Markers
Background:
- Acute appendicitis is a common surgical emergency in children.
- Diagnostic accuracy for appendicitis in pediatric patients can be challenging.
- Leucocyte count and C-reactive protein (CRP) are commonly used inflammatory markers.
Purpose of the Study:
- To evaluate the diagnostic role of leucocyte count and CRP in pediatric acute appendicitis.
- To identify cases of acute appendicitis in children presenting with normal leucocyte count and CRP levels.
- To compare diagnostic marker utility in children versus adults.
Main Methods:
- A comparative study involving 100 children with acute appendicitis (group B) and 100 with uninflamed appendices (group A).
- Preoperative leucocyte count and CRP levels were measured and analyzed.
- The distribution of normal, elevated, and combined values was calculated for both groups.
Main Results:
- Leucocyte count significantly differentiated between inflamed and uninflamed appendices in children (p < 0.001).
- Mean leucocyte count was 10.2 x 10(9)/L in controls and 15.0 x 10(9)/L in appendicitis cases.
- C-reactive protein (CRP) levels did not effectively distinguish between the groups (p = 0.866).
- Notably, 7% of children with acute appendicitis had both normal leucocyte count and CRP levels.
Conclusions:
- Normal leucocyte count and CRP levels do not reliably exclude acute appendicitis in children.
- Diagnostic strategies for pediatric appendicitis may need to consider limitations of these inflammatory markers.
- Findings contrast with adult appendicitis diagnostics, emphasizing age-specific considerations.
Unlabelled:
The present study aimed to determine the role of leucocyte count and C-reactive protein (CRP) measurements in the diagnosis of acute appendicitis in children. In particular, children with acute appendicitis but normal leucocyte count and CRP level were sought. The present study protocol was identical to those used in earlier studies on adult patients with suspected acute appendicitis. The mean preoperative leucocyte count and CRP value in 100 consecutive children with an uninflamed appendix at appendicectomy (group A) and in 100 consecutive patients with acute appendicitis (group B) were calculated. The numbers of patients with (i) both values normal, (ii) only leucocyte count raised, (iii) only CRP level raised, and (iv) both values raised were calculated in both groups A and B. Leucocyte count effectively (p < 0.001) separated children with uninflamed appendix (mean +/- SEM 10.2 +/- 0.4 x 10(9) l(-1)) from those with acute appendicitis (15.0 +/- 0.4 x 10(9) l(-1)), but the CRP value was of no use in this respect (p = 0.866; 31 +/- 4 mg l(-1) and 30 +/- 4 mg l(-1)). The most conspicuous finding was that in children with acute appendicitis, both values were normal in 7 out of 100 patients.
Conclusion:
Contrary to adult patients, normal leucocyte count and CRP value do not effectively exclude acute appendicitis in children.
More Related Videos
Related Concept Videos
Appendicitis-I: Introduction
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
Appendicitis-II: Diagnostic Studies and Management
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
Acute Pyelonephritis II: Diagnostic Studies and Management
Acute Inflammation II: Cellular Phase
Appendicitis

