OBJECTIVE The overall prognosis of encephalocele (EC) is not well described. However, the presence of some risk factors may result in neurodevelopmental delay (NDD) and negatively affect the prognosis of affected patients. The goal of this study was to evaluate neurodevelopmental outcome, as well as the impact of a number of factors on the outcome in patients with ECs. METHODS This was an observational, retrospective study including 102 children with EC who were followed at the pediatric neurosurgery department of a tertiary medical center between the years 2010 and 2021. The authors evaluated NDD status according to the Centers for Disease Control and Prevention classification via clinical evaluation and parent interviews in the outpatient setting. RESULTS There were 52 boys and 50 girls. The median age at the time of surgery was 4 months (range 1 day–7.5 years). Seventy-one patients (69.6%) had posterior ECs, whereas 31 (30.4%) had anterior ECs. Forty-three (42.2%) of the ECs contained neural tissue. Of the 102 patients, 33 (32.4%) had ventriculomegaly. In terms of NDD, 14 (14.9%) had mild/moderate delay, whereas 17 patients (18.1%) had severe NDD. On univariate analysis, posterior location, size of sac, presence of neural tissue, ventriculomegaly, symptomatic hydrocephalus, and postoperative infection were correlated with NDD. On a multivariate logistic regression model, only neural tissue presence had a statistically significant association with NDD (OR 7.04, 95% CI 1.33–37.2, p = 0.022). Although not statistically significant, children with ventriculomegaly were 2.6 times as likely to have NDD (95% CI 0.59–11.19, p = 0.362). CONCLUSIONS This is a single-center study with a large sample size in which the neurodevelopmental status of patients with EC was assessed, and the authors tried to find the risk factors of NDD in these patients. The results showed that the presence of neural tissue within the EC sac was the only risk factor that had independent statistically significant association with NDD.

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