Surgeons stopped escaping difficult gallbladders by opening the abdomen. What they do instead is safer for the bile duct and harder on everything else

There is a moment in a gallbladder operation when the surgeon cannot see well enough to proceed. The tissue is inflamed to the point where the cystic duct and the bile duct are no longer distinguishable, and the discipline of the operation says that nothing may be divided until they are.

For thirty years the answer to that moment was to make a larger incision and finish the operation by hand. Increasingly it is not. The gallbladder is left partly in place instead — its neck and a rim of wall abandoned where the danger is — and the operation ends laparoscopically. That change is well justified by what it prevents. It is less often described by what it costs.

What subtotal cholecystectomy actually produces#

The Society for Surgery of the Alimentary Tract published a state-of-the-art systematic review and meta-analysis of the procedure in 2026, synthesising studies from 2010 to mid-2025.

Those two numbers are the whole argument. The procedure exists to avoid the injury that ruins a life, and it does that well. It achieves it by leaving behind a structure that leaks, retains stones, and sends one patient in six back for an endoscopic procedure afterwards.

Set against total cholecystectomy, the review found subtotal significantly worse for bile leak, retained stones, overall complications, readmission, reoperation and postoperative ERCP — and no different for mortality, intensive care admission or length of stay. The morbidity is real and it is mostly the kind that is fixed with another procedure rather than the kind that kills.

The technique variant that matters#

Subtotal cholecystectomy is done in two ways. The reconstituting version closes the gallbladder remnant so that it holds; the fenestrating version leaves it open and drains. Both reviews found the choice consequential in the same direction: the 2026 analysis reported significantly higher bile leak and longer stay after the fenestrating technique, and the earlier review found the reconstituting approach associated with lower risk across eleven of the outcomes it examined.

The 2026 review also identified patient factors that shift the risk. Diabetes was linked to higher rates of leak, complications and ERCP; male sex to more surgical site infection.

Which gallbladders become difficult#

The conditions that force a bailout are largely known before the operation begins. A systematic review and meta-analysis of preoperative risk factors for conversion to open surgery pooled the published odds ratios.

None of these is modifiable on the morning of surgery. What they permit is planning: knowing before the first incision which operations are likely to become difficult, and staffing and scheduling them accordingly.

Why a low conversion rate is an incomplete boast#

A German secondary referral centre reported its ten-year record in 2026: 1,534 laparoscopic cholecystectomies, 31 conversions to open, a rate of 2.0 percent, and bile duct injury in 0.26 percent. Eighty-four percent of the conversions were emergency cases. The authors propose that a low conversion rate together with a low complication rate can serve as a marker of surgical quality.

As stated, with both halves attached, that is defensible. The half that cannot be dropped is the second one. A conversion rate can be driven toward zero by finishing difficult operations subtotally instead, and the pooled evidence says that route carries a 24.7 percent complication rate and returns one patient in six for an endoscopic procedure. A unit reporting its conversion rate alone is reporting the denominator of its own choice.

What is missing here#

1. None of these figures is Korean. Published Korean series reporting conversion rates or subtotal cholecystectomy outcomes at national scale were not available; the Korean number this publication has is a bile duct injury rate of 0.7 percent across 18 academic institutions, which is not the same measurement.
2. The subtotal figures are pooled across studies with different definitions of a difficult gallbladder and different thresholds for abandoning a total cholecystectomy, so the 24.7 percent complication rate describes a heterogeneous group of operations.
3. Comparisons of subtotal against total cholecystectomy are comparisons between patients who were selected into each, not between randomised arms. Subtotal is performed on the worst gallbladders by definition, and no adjustment removes that.
4. The German series is one centre and 1,534 operations, which is a description of that unit rather than a benchmark other units are obliged to meet.