What Causes Hernias in Children?
Jan 18, 2022
Source: Cainiu Health
Dr. Ma Yan
Introduction
Causes of Pediatric Hernia: Pediatric hernias primarily include two types—congenital inguinal hernia and umbilical hernia. The fundamental cause of pediatric inguinal hernia is failure of the processus vaginalis to close timely; umbilical hernia occurs due to incomplete closure of the umbilical ring. A reducible swelling appears intermittently in the inguinal region or at the umbilicus. This swelling emerges—or enlarges—during upright posture, crying, or other activities that increase intra-abdominal pressure.
Pediatric hernia is the most common condition requiring general surgical intervention in children. During embryonic development, a peritoneal process (also known as the processus vaginalis) forms in the inguinal region to facilitate descent of the testes into the scrotum or fixation of the round ligament of the uterus. In some infants, this process fails to close completely after birth, allowing abdominal contents—such as small intestine, omentum, ovaries, or fallopian tubes—to protrude into the patent processus vaginalis, resulting in a hernia. If only peritoneal fluid enters the scrotum, it manifests as hydrocele.
What Causes Pediatric Hernia?
Pediatric hernias primarily include two congenital types: inguinal hernia and umbilical hernia. The underlying cause of pediatric inguinal hernia is failure of timely closure of the processus vaginalis; conversely, umbilical hernia results from incomplete closure of the umbilical ring.
A reducible, fluctuating mass—sometimes present, sometimes absent, or varying in size—appears in the inguinal region or at the umbilical site. This mass typically appears or enlarges during activities that increase intra-abdominal pressure, such as standing or crying. In early stages, the mass often spontaneously reduces upon lying supine or may be manually reduced by gentle pressure. Initially, aside from the characteristic bulge, affected children usually experience no significant discomfort. Parents commonly seek medical evaluation upon noticing a small inguinal swelling, asymmetry of the scrotum, or an umbilical mass. As the child grows, the hernia sac progressively enlarges, increasing the risk of incarceration and strangulation—potentially leading to testicular or ovarian infarction and atrophy. Therefore, timely intervention is essential.
How to Prevent Pediatric Hernia
1. Minimize and avoid factors that elevate intra-abdominal pressure, including excessive crying, coughing, constipation, emotional outbursts, and vigorous physical activity.
2. Ensure adequate rest; when a hernia protrudes, gently guide it back into the abdominal cavity using manual pressure.
3. Limit prolonged running, standing, or squatting; encourage regular supine rest.
4. For older toddlers with hernia, engage in appropriate physical exercise to strengthen overall constitution.
The above outlines the primary causes of pediatric hernia. We hope this information proves helpful.
