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Obesity Linked to Higher Cancer Rates: Significant Implications for Surgery

Surgeons should recognize that managing obesity could notably decrease cancer rates among patients.

  • Obesity contributes to about 10% of new cancer diagnoses in the U.S., with specific cancers like endometrial and hepatobiliary seeing rates as high as 50%.
  • Patients losing over 10% of their body weight through bariatric surgery or medication showed modest reductions in cancer incidence, ranging from -0.02% to -0.5%.

This suggests that integrating weight loss strategies in surgical care may help mitigate cancer risks.

  • Inflammation and hormonal changes related to obesity complicate cancer development, emphasizing the need for comprehensive weight management.

Journal Article by Shen S, Brown KA, Green AK and Iyengar NM in JAMA

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New Models for Predicting Hospital Choice in Pancreatic Surgery

Distance-only models fail to accurately predict where patients receive pancreaticoduodenectomy (PD).

  • Accuracy: distance-only model (16.3%), distance + volume model (32.9%), comprehensive model (24.3%).
  • Patients correctly predicted by volume models were more often from urban areas (74.7% vs. 61.0%) and had lower in-hospital mortality (1.3% vs. 3.3%).

Surgeons need to consider additional factors beyond distance, like hospital volume and patient demographics, to optimize outcomes and patient selection.

Journal Article by Ross-Driscoll K, Huber S (…) Ellis RJ et 5 al. in Ann Surg Oncol

© 2026. The Author(s).

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Novel Laparoscopic Method for Bile Duct Resection in PBM

A retroperitoneal-first laparoscopic technique is promising for bile duct resection in pancreaticobiliary maljunction, improving surgical outcomes.

  • Operative time was 480 minutes, with 210 minutes for the retroperitoneal approach and only 40 ml blood loss.
  • Postoperative recovery was smooth; the patient was discharged on day 14 and remains recurrence-free after 3 years post-chemotherapy.

This technique offers enhanced visualization and stability, essential for challenging bile duct surgeries.

  • It may be particularly beneficial for safe transection above the pancreatobiliary junction and improving lymphadenectomy.

Journal Article by Karasuyama T, Kiguchi G (…) Takeyama O et 2 al. in Ann Surg Oncol

© 2026. Society of Surgical Oncology.

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Fluorescence Lymphography in Esophagectomy Shows No Chyle Leakage Benefit

New study evaluates indocyanine green fluorescence to prevent chyle leakage during esophagectomy, but results are mixed.

  • Chyle leakage incidence: 17% in the ICG group vs. 10% in controls (p = 0.163).
  • ICG influenced intraoperative decisions in 36% of cases, with successful thoracic duct visualization in 85%.

Surgeons may not see a reduction in chyle leakage, but ICG can aid in intraoperative management decisions.

  • Conservative treatment was used for all ICG group leakage cases vs. two re-interventions in the control group (p = 0.271).

Journal Article by Henckens SPG, van der Aa DC (…) Gisbertz SS et 4 al. in Ann Surg Oncol

© 2026. The Author(s).

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Gallium-68 PET for Pancreatic Neuroendocrine Tumors: Limited Sensitivity

A study shows Gallium-68 DOTATATE PET has high specificity but low sensitivity in identifying lymph node metastases in pancreatic neuroendocrine tumors, affecting surgical decisions.

  • Detected suspicious lymph nodes in 24% of cases; pathology confirmed involvement in 42%.
  • Sensitivity was 46%, specificity 92%, with a positive predictive value of 81%.

Consider it for preoperative evaluations, especially for small tumors, keeping in mind its limitations.

  • Higher Krenning scores and larger lymph nodes correlate with true-positive results.

Journal Article by Gudmundsdottir H, Hernandez-Delima FJ (…) Cleary SP et 7 al. in BMC Surg

Copyright © 2026 Elsevier Inc. All rights reserved.

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AI-Driven Marker Improves Outcomes for Pancreatic Cancer Nonproducers

A new AI-derived tumor marker can enhance treatment response assessment in pancreatic cancer patients who do not produce elevated CA19-9.

  • In a study of 121 patients, a 50% or more decline in the marker (e19-9) was linked to a 5-fold higher likelihood of completing neoadjuvant therapy and surgery.
  • An e19-9 level below 100 significantly correlated with improved overall survival (hazard ratio 0.49).

Consider integrating e19-9 monitoring into clinical practice for nonproducing CA19-9 patients to optimize treatment planning and prognostication.

Journal Article by Thalji SZ, Aldakkak M (…) Kothari AN et 18 al. in JAMA Surg

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Occult Nodal Disease in Gallbladder Cancer: Critical Insights

Many gallbladder cancer patients thought to be node-negative actually show hidden nodal metastasis, impacting surgical outcomes.

  • Of 187 patients, 33.1% classified as clinically node-negative had occult nodal disease upon final pathology.
  • Key preoperative predictors included elevated CA19-9, systemic immune-inflammation index, and jaundice.
  • Risk of occult nodal disease increases significantly with more elevated markers: from 17.1% with 0 markers to 73.6% with 2-3 markers.

Surgeons should incorporate these factors into preoperative evaluations to refine staging and treatment plans.

Journal Article by Kawashima J, Yuza K (…) Pawlik TM et 9 al. in Ann Surg Oncol

© 2026. The Author(s).

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High Variation in Expert Assessment of Peritoneal Malignancy

Surgeons face significant interobserver variation in evaluating peritoneal lesions despite their experience.

  • Consensus on lesion scoring achieved in only 22.5% of cases among 50 expert surgeons (α = 0.174).
  • Agreement on morphologic terms reached in 26.5% of images (α = 0.0902), with “tumor nodule” used 90.4% of the time (p < 0.001).
  • Consensus prediction of the probability of malignancy occurred in just 52.5% of cases (α = 0.155).

Standardizing lesion descriptions may enhance reliability in surgical planning and patient assessment.

Journal Article by Bhatt A, Sharma V (…) Glehen O et 42 al. in Ann Surg Oncol

© 2026. Society of Surgical Oncology.

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Improved Technique for Chronic Anal Fissures

Probe-guided intersphincteric lateral internal sphincterotomy shows significant promise for treating chronic anal fissures, enhancing surgical precision and outcomes.

  • Achieved 96.4% healing rate within 4 weeks in 165 cases, with only 2 recurrences.
  • Complications remained low: no incontinence or keyhole deformities reported, and only 2.4% required drainage revision.

This technique allows for effective management of complex cases, minimizing recovery time and enhancing patient satisfaction.

  • Average procedure time was just 11 minutes with minimal blood loss (<5 ml).

Journal Article by Liu R, Li J (…) Zhong S et 3 al. in Dis Colon Rectum

Copyright © 2026 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of the American Society of Colon and Rectal Surgeons.

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Surveillance strategies for colorectal cancer need improvement

A microsimulation model shows that surveillance for colorectal cancer recurrences yields suboptimal detection rates post-surgery.

  • Over 5 years, recurrence rates were 9.5% for colon cancer and 38% for rectal cancer, with 82.5% and 85.5% detected, respectively.
  • Detecting one recurrence requires 148 CEA tests, 37 CT scans, and 21 colonoscopies for colon cancer, versus 31 CEA tests, 8 CT scans, and 4 colonoscopies for rectal cancer.

Optimizing surveillance can enhance early detection and improve patient outcomes.

Journal Article by Samur S, Gursel E (…) Neugut AI et 8 al. in BMJ Open

© Author(s) (or their employer(s)) 2026. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ Group.

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