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Umbilical shapes predict future protrusion in pediatric umbilical hernias
Yuta Nakajima1, Shoji Kondoh1, Shunsuke Yuzuriha2
1Department of Plastic Surgery, Ina Central Hospital, Ina, Nagano, Japan.
Summary
Umbilical hernia in children can lead to a protuberant umbilicus. Specific umbilical shapes in infants can predict this outcome, aiding early intervention for pediatric umbilical hernia patients.
Area of Science:
- Pediatric Surgery
- Developmental Pediatrics
- Clinical Genetics
Background:
- Umbilical hernias are common in infants.
- The development of a protuberant umbilicus is a potential complication.
- Early identification of predictive factors is crucial for management.
Purpose of the Study:
- To determine the incidence of protuberant umbilicus in pediatric umbilical hernia patients.
- To identify early predictive factors for protuberant umbilicus development.
- To evaluate the association between initial umbilical shape and later protuberance.
Main Methods:
- Retrospective review of 103 pediatric patients younger than 3 months with umbilical hernias.
- Follow-up until 1 year of age to assess umbilical appearance (concave vs. protuberant).
- Statistical analysis including single-factor and logistic regression to identify predictive factors.
Main Results:
- 28% of patients developed a protuberant umbilicus by age 1.
- Initial umbilical shapes, specifically highly inflated balloon and crescent types, were significant predictors.
- Straining habits also showed a significant association with protuberant umbilicus development.
Conclusions:
- Initial umbilical shape in pediatric patients with umbilical hernias is a valuable predictor of protuberant umbilicus.
- Early assessment of umbilical morphology can guide clinical management and parental counseling.
- Further research may explore the underlying mechanisms of shape-related protuberance.

