Dr Murat Ustun
Bariatric surgeon with 8,000+ successful procedures, IFSO member and pioneer of ESG in Turkey.
Second-Chance Surgery
Weight regain after a gastric sleeve or bypass is more common than you think — and it is fixable. Explore surgical and non-surgical revision pathways with one of Turkey's most experienced revision teams.
No bariatric operation guarantees permanent results on its own. Over time, a gastric sleeve can gradually stretch, the outlet after a gastric bypass can widen, and hormonal adaptation can bring hunger back. Studies show that up to 30% of sleeve patients experience significant weight regain within five years, and severe acid reflux (GERD) develops in as many as 55% of sleeve patients over the long term.
None of this means your first surgery "failed you" — it means your anatomy and metabolism have changed, and there is a well-established medical pathway to correct it. Revision bariatric surgery restores the restriction and metabolic effect of your original procedure, or converts it to one that suits your body better.
At Istanbul Bariatric Center, every revision starts with a diagnostic work-up — endoscopy and imaging — so the pathway is chosen based on why the first operation stopped working, not guesswork.
The right revision depends on your original procedure, your symptoms, and your goals.
| Pathway | Best For | How It Works | Invasiveness |
|---|---|---|---|
| Sleeve → Mini Gastric Bypass | Weight regain after sleeve, especially with reflux (GERD) | Converts the sleeve into a small pouch connected to the intestine, resolving reflux and adding a metabolic effect | Laparoscopic surgery, 2–3 nights |
| Sleeve → Duodenal Switch / Transit Bipartition | High BMI or type 2 diabetes after a sleeve | Keeps the sleeve and adds an intestinal component for maximum weight loss and diabetes control | Laparoscopic surgery, 2–3 nights |
| Endoscopic Re-Sleeve (ESG revision) | Moderately stretched sleeve, patients wanting to avoid surgery | Endoscopic sutures through the mouth re-tighten the stretched sleeve — no incisions | Endoscopic, same-day / 1 night |
| TORe (Transoral Outlet Reduction) | Weight regain after gastric bypass due to a stretched stoma | Endoscopic sutures narrow the widened outlet between pouch and intestine | Endoscopic, same-day discharge |
| Band → Sleeve or Bypass | Failed or complicated gastric band | Removes the band and converts to a sleeve or bypass in one or two stages | Laparoscopic surgery, 2–3 nights |
You may benefit from a revision assessment if any of the following apply:
Read more in our in-depth guides: Revisional Bariatric Surgery in Turkey and the TORe procedure explained.
Revision surgery demands more experience than a first operation. This is where volume and specialisation matter most.
Bariatric surgeon with 8,000+ successful procedures, IFSO member and pioneer of ESG in Turkey.
All procedures are performed at Liv Hospital, Istanbul — holding the gold-standard Joint Commission International accreditation.
No hidden fees. Packages include hospital stay, pre-operative tests, transfers, hotel and dietitian aftercare.
WhatClinic Patient Service Award winner six times (2019–2025), with dedicated UK-based aftercare coordinators.
“I had my surgery with Dr. Murat and his amazing team. My entire experience was nothing short of fabulous. Within just four months, I have already lost 35 kg. I completely trust my life with Dr. Murat and his team.”
“From the moment I arrived, I felt completely at ease—even though I travelled alone. Dr. Murat's team stayed connected with me from surgery until today, guiding me step by step through nutrition, aftercare, and recovery.”
“Had my surgery 6 months ago and have lost 45kg. The continuous support from Dr. Murat's team has been amazing. They check in regularly and answer all my questions promptly.”
Send your surgical history to Dr Murat Ustun's team for a free, no-obligation revision assessment — usually answered within 24 hours.