A large retrospective cohort from the Mayo Clinic Enterprise compared 3,515 robotic cholecystectomies with 19,998 conventional laparoscopic cholecystectomies performed between 2014 and 2025. Importantly, the investigators adjusted outcomes for surgeon volume, learning curve, Tokyo Guidelines severity, and Parkland intraoperative grade, allowing a more meaningful comparison across difficult gallbladder cases.

Robotic surgery was used more frequently in patients with Parkland grade 3 or higher disease, suggesting that the robotic cohort included a substantial number of technically complex cases.

Key Findings

Overall bile duct injury remained uncommon in both groups but was lower after robotic surgery:

• Robotic cholecystectomy: 0.65%
• Laparoscopic cholecystectomy: 1.02%
• Absolute risk reduction: approximately 0.37%
• Estimated number needed to treat: 273

Among patients with acute cholecystitis, robotic surgery was also associated with:

• Lower adjusted odds of bile duct injury.
• Fewer conversions to open surgery.
• Lower 30-day readmission.
• Lower mortality.
• Shorter hospital stay.

The main trade-off was approximately 5 minutes of additional median operative time.

Clinical Significance

This remains observational rather than randomized evidence, but its strength lies in adjusting for disease severity and using structured bile duct injury classification. Such adjustment is essential because comparing surgical platforms without accounting for inflammation and anatomical difficulty can produce misleading conclusions.

Clinical Relevance

For surgeons managing difficult acute cholecystitis, the study supports considering robotic assistance in selected complex cases while maintaining established safe-cholecystectomy principles. Technology should complement—not replace—careful anatomical identification, Critical View of Safety, early bailout strategies, and timely conversion when required.

Source: https://pubmed.ncbi.nlm.nih.gov/42566036/

Lateral Dissection Approach May Reduce Bleeding and Recovery Burden During Acute Laparoscopic Cholecystectomy

A retrospective controlled study published in Frontiers in Surgery evaluated 150 patients with acute cholecystitis and gallstones treated between 2023 and 2025.

Seventy-five patients underwent conventional antegrade or retrograde gallbladder dissection, while 75 were managed with a lateral dissection approach, entering the gallbladder-liver plane from the lateral body of the gallbladder rather than beginning directly in an inflamed Calot's triangle.

Key Findings

Compared with conventional dissection, the lateral approach was associated with:

• Lower intraoperative blood loss.
• Shorter postoperative drain duration.
• Reduced hospital stay.
• Lower pain scores at 12, 24, and 48 hours.
• Lower postoperative inflammatory markers.
• Reduced physiological stress response.

Markers favoring the lateral technique included:

• IL-6.
• IL-8.
• C-reactive protein.
• TNF-α.
• Cortisol.
• ACTH.

Overall complication rates were not increased.

Why the Technique Is Interesting

Severe acute inflammation can obliterate normal tissue planes around Calot's triangle. Beginning dissection laterally may create a safer initial plane and delay entry into the most inflamed region until exposure has improved.

However, the study was retrospective, single-center, modest in size, and without formal power calculation.

Clinical Relevance

For laparoscopic biliary surgeons, the lateral approach may represent another useful option during difficult acute cholecystectomy. It should still be combined with the Critical View of Safety, intraoperative reassessment, cholangiographic or fluorescence assistance when appropriate, and early adoption of subtotal cholecystectomy or conversion when safe anatomy cannot be demonstrated.

Source: https://www.frontiersin.org/journals/surgery/articles/10.3389/fsurg.2026.1890877/full

Natural-Orifice Specimen Extraction Improves Recovery Without Compromising Five-Year Rectal Cancer Outcomes

A multicenter Chinese study published in Diseases of the Colon & Rectum compared Natural-Orifice Specimen Extraction Surgery (NOSES) with conventional laparoscopic and open surgery for curative rectal adenocarcinoma.

The analysis included 3,385 patients treated between 2017 and 2019:

• 486 NOSES procedures.
• 1,520 conventional laparoscopic procedures.
• 1,379 open resections.

Inverse probability weighting was used to reduce differences between treatment groups.

Short-Term Outcomes

NOSES demonstrated the fastest postoperative recovery, including:

• Earlier gastrointestinal recovery.
• Lower postoperative pain.
• Fewer abdominal wall and extraction-site complications.

At six months, bowel and urinary functional outcomes were better after both minimally invasive approaches than after open surgery. Functional results were broadly comparable between NOSES and standard laparoscopic surgery.

Oncologic Outcomes

At five years:

• Disease-free survival was comparable between groups.
• Overall survival was also similar.
• No evident oncologic disadvantage was associated with NOSES in appropriately selected patients.

Clinical Significance

The principal advantage of NOSES is avoidance of an abdominal specimen-extraction incision. This may reduce wound pain, infection, incisional hernia, and cosmetic burden.

However, careful selection remains critical because contamination, tumor manipulation, extraction-route injury, and sphincter function must all be considered.

Clinical Relevance

For colorectal minimally invasive surgeons, NOSES may be a valuable option in selected patients when oncologic margins, specimen integrity, aseptic technique, sphincter preservation, and safe natural-orifice extraction can all be maintained.

Source: https://pubmed.ncbi.nlm.nih.gov/42565334/

Laparoscopic Splenectomy With Azygoportal Disconnection May Improve Liver Functional Reserve

A prospective Surgical Endoscopy study followed 68 patients with cirrhotic portal hypertension undergoing laparoscopic splenectomy combined with azygoportal disconnection for one year.

Rather than evaluating only perioperative safety, investigators assessed whether the operation altered objective measures of hepatic reserve.

Parameters Evaluated

Liver function was monitored using:

• Child-Pugh classification.
• ALBI grade.
• Indocyanine green retention at 15 minutes (ICG-R15).
• ICG plasma clearance.
• ICG half-life.

Key Findings

By 12 months:

• Child-Pugh categories improved significantly.
• ALBI grades improved.
• ICG-R15 improved progressively.
• ICG plasma clearance increased.
• ICG half-life shortened.

Most objective improvement developed gradually between postoperative months 3 and 12.

Clinical Significance

These findings suggest that in carefully selected patients with cirrhotic portal hypertension, splenectomy with azygoportal disconnection may provide benefits beyond controlling hypersplenism and variceal bleeding risk. Changes in portal hemodynamics could potentially improve hepatic functional reserve.

The procedure remains highly dependent on local experience and is more commonly practiced in parts of Asia than in many Western centers.

Clinical Relevance

For HPB and upper-GI laparoscopic surgeons, improved hepatic reserve may influence future tolerance of hepatocellular carcinoma treatment, additional surgery, systemic therapy, or other interventions in cirrhotic patients.

Source: https://pubmed.ncbi.nlm.nih.gov/42566007/

Robotic Colorectal Surgery Value Depends Strongly on Learning Curve and Institutional Volume

An umbrella review published in the Journal of Robotic Surgery synthesized 27 systematic reviews and meta-analyses published between 2021 and March 2026. Collectively, these reviews represented more than 180 original studies and over 110,000 colorectal surgery patients.

Overall Findings

Across the evidence base, robotic colorectal surgery generally demonstrated:

• Comparable overall complication rates to laparoscopy.
• Similar anastomotic leak rates.
• Comparable oncologic outcomes.
• Consistently lower conversion to open surgery.

The reduction in conversion appeared particularly relevant in:

• Rectal cancer.
• Obese patients.
• Technically difficult pelvic procedures.

The most consistent disadvantage was longer operative time.

However, the review notes that prolonged operative duration is often concentrated during early learning phases and may decrease substantially as programs mature.

Economic Perspective

Robotic surgery continues to have higher initial capital and disposable costs. Nevertheless, the authors argue that conventional cost-effectiveness analyses may underestimate benefits achieved by:

• High-volume utilization.
• Completed learning curves.
• Lower conversion rates.
• More efficient operating-room pathways.
• Reduced complications in selected cases.

Clinical Relevance

For surgeons and hospital administrators, robotic colorectal surgery should be evaluated as an institutional program rather than simply as a device. Case volume, mentorship, dual-console training, standardized technique, operating-room efficiency, and realistic local cost analysis strongly influence whether robotics provides meaningful clinical value.

Source: https://pubmed.ncbi.nlm.nih.gov/42565915/

Probabilistic Performance Indicators May Improve Surgical Video and Robotic Skill Assessment

A PLOS One validation study evaluated a new probabilistic approach to calculating Objective Performance Indicators (OPIs) from surgical video and robotic system data.

The analysis included 5,408 annotated operative steps from 1,016 procedures across seven surgical procedure types.

Traditional performance analysis assumes that operative steps have clearly defined start and end points. In reality, surgical phases often overlap, transitions are gradual, and different reviewers may place boundaries differently.

Study Approach

The investigators compared:

• Conventional OPI calculation.
• Probabilistic OPI calculation incorporating uncertainty in phase boundaries.

Performance indicators included measures derived from:

• Instrument movement.
• Motion efficiency.
• Force patterns.
• Activity during defined operative steps.

Key Findings

Probabilistic OPIs demonstrated:

• Less frequent measurement bias.
• Smaller magnitude of bias.
• Lower variability across many comparisons.
• Greater robustness to disagreement about operative step boundaries.

Clinical Significance

Reliable performance measurement is increasingly important as surgical education moves toward objective competency assessment rather than case numbers alone.

The authors are employees of a robotic surgery company, making independent external validation important.

Clinical Relevance

For laparoscopic and robotic educators, probabilistic performance analysis may strengthen:

• Video-based assessment.
• Technical skill benchmarking.
• Simulator evaluation.
• Operative feedback.
• Credentialing systems.
• AI-assisted performance monitoring.

Better handling of uncertain phase boundaries could prevent misleading feedback and improve the reliability of future data-driven surgical education systems.

Source: https://pubmed.ncbi.nlm.nih.gov/42566463/

Key Takeaway

The 8 August evidence emphasizes that improved minimally invasive outcomes increasingly depend on combining technology with structured assessment of anatomical difficulty, institutional experience, and operative quality. Robotic cholecystectomy may offer selected advantages in severe acute cholecystitis, alternative dissection strategies can improve difficult gallbladder surgery, NOSES may enhance colorectal recovery without compromising long-term oncology, and emerging data analytics are making objective surgical performance assessment increasingly sophisticated.