[Internal herniation through a mesenteric defect after Roux-en-Y anastomosis]

Area of Science:

• Gastroenterology
• Surgical complications
• Abdominal surgery

Background:

• Internal herniation is a known complication following Roux-en-Y anastomosis.
• Secure closure of mesenteric defects is recommended to prevent internal herniation.
• However, severe consequences of mesenteric closure defects are infrequently documented.

Observation:

• A patient developed entire small bowel necrosis.
• The cause was internal herniation through a mesenteric rent.
• The rent was located around the Roux-en-Y anastomosis.

Findings:

• This case represents the first reported instance of entire small bowel necrosis due to internal herniation.
• The mesenteric rent around the Roux-en-Y anastomosis was the specific cause.
• The necrotic small bowel segment required surgical intervention.

Implications:

• This case underscores the critical need for meticulous surgical technique in closing mesenteric defects during Roux-en-Y procedures.
• Failure to ensure secure mesenteric closure can lead to life-threatening complications.
• Awareness of this rare but severe outcome is crucial for surgeons performing bariatric and gastrointestinal reconstructive surgery.