Related Experiment Video
Updated: Aug 2, 2026

Surgical Management of Meatal Stenosis with Meatoplasty
Published on: November 30, 2010
Reduction en masse of Inguinal Hernia in a 2-Month-Old Male Infant
Masato Kojima1,2, Ryo Touge1, Sho Kurihara1
1Department of Pediatric Surgery, Hiroshima University Hospital, Hiroshima, Japan.
Insights
Reduction en masse, a rare inguinal hernia complication in infants, can be life-threatening if misdiagnosed. Gentle reduction and post-procedure monitoring are crucial for timely intervention in pediatric cases.
Area of Science:
- Pediatric Surgery
- Gastrointestinal Surgery
Background:
- Reduction en masse is a rare complication of inguinal hernias where the hernia sac reduces into the preperitoneal space, trapping bowel.
- This condition is often associated with inguinal hernias and presents without a typical groin bulge, potentially delaying diagnosis.
Observation:
- A 2-month-old infant presented with a nonreducible left inguinal hernia; manual reduction lessened the bulge.
- Laparoscopy revealed dilated intestines, ascites, and an ischemic bowel, indicating a complication.
- Laparotomy confirmed reduction en masse with a strangulated ileum at the hernia neck.
Findings:
- Surgical resection of 20 cm of strangulated ileum was necessary due to reduction en masse.
- The infant's condition was initially unstable but improved postoperatively.
- The inguinal hernia was ultimately repaired 11 months after the initial event.
Implications:
- Reduction en masse in pediatric patients is rare but carries significant risk, including delayed diagnosis and life-threatening outcomes.
- Gentle reduction techniques and ultrasound confirmation are vital to prevent this complication.
- Overnight observation post-reduction is recommended to detect late presentations and ensure timely intervention.
Abstract:
Reduction en masse is the reduction of the hernial sac into the preperitoneal space, with a loop of bowel remaining trapped at the neck of the hernial sac. This complication is rare, usually associated with inguinal hernias, and is characterized by the absence of a noticeable bulge in the groin. The patient was a 2-month-old male infant and presented with a nonreducible bulge in his left groin, and incarceration of the left inguinal hernia was diagnosed. Manual reduction was performed, and the hernia bulge became less noticeable. He was admitted, and laparoscopic percutaneous extraperitoneal closure was scheduled for the next day. The laparoscopy revealed remarkably dilated intestines, serous ascites, and an ischemic intestine in the left groin. A laparotomy was performed and revealed reduction en masse of the left inguinal hernia with a strangulated ileum at its neck. We made an incision at the neck, followed by the resection of 20-cm long strangulated ileum. The patient's condition was unstable on the day of operation, but the postoperative period was uneventful, and the left inguinal hernia was repaired, 11 months after the operation. Reduction en masse in pediatrics is significantly rare but when it occurs, the diagnosis can be delayed and occasionally the patient will be life-threatening. To avoid reduction en masse, it is crucial to perform the reduction gently and confirm the absence of a hernia sac in the preperitoneal space containing a loop of bowel by ultrasound scanning. Moreover, contrary to common practice, overnight observation and close monitoring will avoid missing a late presentation, leading to timely interventions.
More Related Videos
Related Concept Videos
Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the small...
Development of the Oral Microbiota

