目的 探讨功能性便秘（FC）与儿童急性阑尾炎（AA）阑尾腔内粪石形成的相关性。方法 回顾性分析2022年8月至2023年6月收治确诊为AA患儿的临床资料。根据阑尾腔内有无粪石分为合并粪石AA组和无粪石AA组，比较两组间FC相关临床特征，分析影响儿童AA阑尾腔内粪石形成的因素。结果 共纳入AA患儿192例，男114例、女78例，中位年龄6.0（4.0~9.0）岁。其中合并粪石AA组72例、无粪石AA组120例。与无粪石AA组相比，合并粪石AA组大便潴留发生率（≥4岁）较高、FC患病率较高、平均便秘时间较长、偏食发生率较高，差异有统计学意义（P<0.05）。二元logistic回归分析结果显示，便秘时间长、偏食是儿童AA阑尾腔内粪石形成的独立危险因素（P<0.05）。结论 长期便秘及偏食对儿童AA阑尾腔内粪石的形成有一定相关性。

Objective To investigate the correlation between functional constipation (FC) and the formation of fecaliths in the appendix cavity in children with acute appendicitis (AA). Methods The clinical data of children diagnosed with AA from August 2022 to June 2023 were retrospectively analyzed. According to the presence or absence of fecaliths in the appendix cavity, the patients were divided into the AA group with fecaliths and the AA group without fecaliths. The clinical characteristics of FC between the two groups were compared, and the factors affecting the formation of fecaliths in the appendix cavity of children with AA were analyzed. Results A total of 192 children (114 boys and 78 girls) with AA were included and the median age was 6.0 (4.0-9.0) years old. There were 72 children in the AA group with fecaliths and 120 in the AA group without fecaliths. Compared with the AA group without fecaliths, the AA group with fecaliths had a higher incidence of fecal retention (≥ 4 years old), higher prevalence of FC, longer average constipation time, and higher incidence of dietary bias, and the difference was statistically significant (P<0.05). Binary logistic regression analysis showed that prolonged constipation duration and dietary bias were independent risk factors for the formation of fecaliths in the appendix cavity of children with AA (P<0.05). Conclusions Long-term constipation and dietary bias have a certain correlation with fecaliths formation in the appendix cavity of children with AA.