• Levent Duman, Özkan Cesur, Duygu Kumbul Doğuç, Seda Çelik, Adnan Karaibrahimoğlu, and Mustafa Çağrı Savaş.
• Department of Pediatric Surgery, Süleyman Demirel University Faculty of Medicine, Isparta-Turkey.
• Ulus Travma Acil Cer. 2020 Sep 1; 26 (5): 699-704.

BackgroundAppendicitis is one of the most common surgical emergencies. Early diagnosis of appendicitis is important in children because any delay in treatment substantially leads to complicated appendicitis. In this study, we aimed to test the diagnostic value of pentraxin 3 (PTX3) level in children with acute appendicitis and to investigate whether there is a relationship between the progression of the disease and PTX3 level.MethodsThis prospective study included 70 children. They were divided into three groups as follows: group 1 (appendicitis; n=37), group 2 (abdominal pain; n=25), group 3 (control; n=8). Demographic data, medical history, the time from the onset of symptoms to blood sampling, operative and pathological findings of the patients were noted, and white blood cell (WBC), C-reactive protein (CRP) and PTX3 values were measured.ResultsThe mean WBC, CRP and PTX3 values were found to be significantly increased in the appendicitis group (p<0.001). PTX3 has the highest diagnostic value (AUC=0.828), specificity (88%) and positive predictive value (90%) in the appendicitis group. WBC values did not show a significant correlation with the time periods (p=0.999). The mean CRP level of the appendicitis group in 24-48 hours was found to be higher than in 0-24 hours, but this was marginally significant (p=0.068). On the other hand, PTX3 value was significantly correlated with the time periods (p<0.05).ConclusionThis study showed that PTX3 is a valuable inflammatory biomarker in the diagnosis of acute appendicitis and also documented that PTX3 is useful for predicting the progression of the disease.

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