Strangulated Diaphragmatic Hernia Following Roux-en-Y Gastric Bypass: Surgical Pitfalls and Lessons Learned

Ahmed Abdelsalam1, Mohammed Elshal2, Ahmed Elansary2

  • 1Cairo University, Giza, Egypt. a.abd.elsalam@kasralainy.edu.eg.

Obesity Surgery
|October 27, 2025
PubMed
Abstract

Insights

A rare but fatal diaphragmatic hernia complication after metabolic and bariatric surgery (MBS) can occur. Prompt diagnosis and careful surgical technique are crucial for managing this life-threatening condition.

Area of Science:

  • Gastroenterology
  • Surgical Innovation
  • Patient Safety

Background:

  • Metabolic and bariatric surgery (MBS) is increasing, leading to a potential rise in rare complications.
  • Iatrogenic diaphragmatic hernia is an extremely rare but potentially fatal complication of MBS.
  • Delayed recognition of diaphragmatic hernia is common due to non-specific symptoms.

Purpose of the Study:

  • To report a case of strangulated diaphragmatic hernia following Roux-en-Y gastric bypass (RYGB).
  • To highlight diagnostic and surgical challenges associated with this rare complication.
  • To provide lessons for bariatric surgeons on managing diaphragmatic hernias.

Main Methods:

  • Case report detailing the presentation of a diaphragmatic hernia after RYGB.
  • Description of the diagnostic work-up process.
  • Explanation of the surgical management strategy employed.

Main Results:

  • The patient experienced a smooth initial recovery post-RYGB.
  • A subsequent pleural effusion developed, necessitating intervention.
  • Full clinical and radiological recovery was achieved post-treatment.

Conclusions:

  • Emphasizes the need for vigilance regarding rare, life-threatening MBS complications.
  • Stresses the importance of precise intraoperative energy device use, particularly in revisional surgery.
  • Highlights the necessity of a high index of suspicion for vague symptoms and tailored surgical approaches.