Astragaloside III inhibits MAPK-mediated M2 tumor-associated macrophages to suppress the progression of lung Cancer cells via Akt/mTOR signaling pathway

Tumor-associated macrophages (TAMs) play a key role in facilitating a range of cancerous processes by modulating the tumor microenvironment thus being a target for cancer treatment. Astragaloside III (AS-III), a compound derived from Astragalus triterpenoid saponins, has demonstrated immunomodulatory and anticancer properties, but the underlying mechanism remains unclear. Here, we demonstrated that AS-III suppressed metastasis, angiogenesis and induced apoptosis of lung cancer in vitro and in vivo by inhibiting macrophage M2 polarization and inducing M1 phenotype transformation. This was achieved through the inhibition of the MAPK signaling pathway. Furthermore, the tumor inhibitory effects of AS-III were found to be mediated by the Akt/mTOR pathway. Overall, these results highlight the role of AS-III in modifying the TAMs in TME, offering fresh perspectives on tumor immunotherapy by means of targeting macrophage.

Identification of surgical human-robot interactions and measures during robotic-assisted surgery: A scoping review

This study aims to identify the dynamics of robotic-assisted surgery (RAS) teams and their metrics. A scoping review across seven science, engineering, and clinical databases was conducted. It was found that literature focuses on skills and interactions centralized around the surgeon and technical components of the robotic system; however, limited literature exists on skill proceduralization specific for other surgical team members performing robotic-assisted surgery procedures. A framework that identifies the individuals (i.e., surgeon, surgical team members, and robotic platform), with their respective skill requirements (technical and nontechnical), and the required interactions among the team and RAS systems was developed. Future research in RAS human-robot interaction can address the need to understand changing dynamics and skills required by the surgical team with the continuing evolution and adoption of surgical robot technology.

Nomogram Model for Prognosis of Distant Metastatic DTC Based on Inflammatory and Clinicopathological Factors

Context

Inflammatory markers may serve as potential biomarkers in predicting prognosis in patients with distant metastasis differentiated thyroid cancer (DM-DTC).

Objective

This study aimed to evaluate the predictive ability of inflammatory markers and clinicopathological features for disease progression (PD) in patients with DM-DTC.

Methods

A retrospective analysis was conducted on 230 DM-DTC patients from May 2016 to January 2022. Patients were divided into a training set and a validation set at a 7:3 ratio. Inflammatory markers were obtained within 1 week before the last 131I treatment. The primary outcome was progression-free survival (PFS). Univariable and multivariable Cox proportional hazards models identified significant prognostic factors, and a nomogram based on inflammatory markers and clinicopathological features was constructed and validated using R software.

Results

Multivariable Cox regression analysis showed that age (hazard ratio [HR] = 2.191; 95% CI, 1.387-3.462), histological type (HR = 2.030; 95% CI, 1.216-3.389), distant metastatic site (HR = 3.379; 95% CI, 1.832-6.233), T stage (HR = 6.061; 95% CI, 2.469-14.925), and LMR (HR = 2.050; 95% CI, 1.194-3.519) were identified as independent risk factors for the progression of DM-DTC. A predictive nomogram was constructed to estimate the probability of DM-DTC progression. The C-index of the PFS model was calculated to be 0.775 (0.749-0.802) for the training set and 0.731 (95% CI, 0.686-0.775) for the validation set. The calibration curve of the validation set closely approached the reference line. The decision curve analysis indicated that when the risk threshold was greater than 0.2, this nomogram model provided clinical net benefit.

Conclusion

The study identified significant inflammatory markers and clinical factors for predicting PD in DM-DTC patients, providing a robust prognostic model with potential clinical application.

The COMPARE Study: Comparing Perioperative Outcomes of Oncologic Minimally Invasive Laparoscopic, da Vinci Robotic, and Open Procedures: A Systematic Review and Meta-analysis of the Evidence

OBJECTIVE

To assess 30-day outcomes of da Vinci robotic-assisted (dV-RAS) versus laparoscopic or video-assisted thoracoscopic​​​​​ (lap/VATS) or open oncologic surgery.

BACKGROUND

Complex procedures in deep/narrow spaces especially benefit from dV-RAS. Prior procedure-specific comparisons are not generalizable.

METHODS

PubMed, Scopus, and EMBASE were systematically searched (latest: November 17, 2023) following Preferred Reporting Items for Systematic Reviews and Meta-Analyses and PROSPERO (Reg#CRD42023466759). Randomized, prospective, and database studies were pooled as odds ratios (ORs) or mean differences (MDs) in R using fixed effects or random effects (heterogeneity significant). ROBINS-I/RoB 2 were used to assess bias.

RESULTS

Of 56,314 unique references over 12 years from 22 countries, 230 studies (34 randomized, 74 prospective, and 122 database) comparing dV-RAS to lap/VATS or open surgery across 7 procedures, 4 specialties, representing 1,194,559 dV-RAS; 1,095,936 lap/VATS and 1,625,320 open cases were included. Operative time for dV-RAS was longer than lap/VATS [MD: 17.73 minutes (9.80, 25.67), P < 0.01] and open surgery [MD: 40.92 minutes (28.83, 53.00), P < 0.01], whereas hospital stay was shorter [lap/VATS MD: -0.51 days (-0.64, -0.38), P < 0.01; open MD: -1.85 days (-2.09, -1.62), P < 0.01] and blood loss was less versus open [MD: -293.44 mL (-359.53, -227.35)]. There were fewer dV-RAS conversions [OR: 0.44 (0.40, 0.49), P < 0.01], transfusions [OR: 0.79 (0.72, 0.88), P < 0.01], postoperative complications [OR: 0.90 (0.84, 0.96), P < 0.01], readmissions [OR: 0.91 (0.83, 0.99), P = 0.04], and deaths [OR: 0.86 (0.81, 0.92), P < 0.01] versus lap/VATS, and fewer transfusions [OR: 0.25 (0.21, 0.30), P < 0.01], postoperative complications [OR: 0.56 (0.52, 0.61), P < 0.01], readmissions [OR: 0.71 (0.63, 0.81), P < 0.01], operations [OR: 0.89 (0.81, 0.97), P < 0.01], and deaths [OR: 0.54 (0.47, 0.63), P < 0.01] versus open surgery. Blood loss [MD:- 12.26 mL (-29.44, 4.91), P = 0.16] and operations [OR: 1.03 (0.95, 1.11), P = 0.48] were similar for dV-RAS and lap/VATS. There was significant heterogeneity.

CONCLUSIONS

Da Vinci-RAS confers benefits across oncological procedures and study designs. These results provide clinical evidence to multispecialty-care decision-makers considering dV-RAS.

Trends in Clinical Outcomes After Major Emergency Abdominal Surgery in Denmark, Data From 2002-2022

Importance

Major emergency abdominal surgery is associated with high morbidity and mortality. Understanding trends in outcomes over time can reveal critical practice-changing improvements, identify gaps in postoperative care, and establish a large-scale benchmark for future research.

Objective

To investigate trends in morbidity and mortality after major emergency abdominal surgery in Denmark.

Design, Setting, and Participants

This was a nationwide, population-based cohort study. Analyses were performed based on data from Danish nationwide administrative registries. Within the public health care system in Denmark, all adult patients undergoing major emergency abdominal surgery from 2002 to 2022 were included. Major emergency abdominal surgeries included laparotomy or laparoscopy due to intra-abdominal pathologies, including intestinal perforation, ischemia, bowel obstruction, abscess, or bleeding.

Exposure

Major emergency abdominal surgery.

Main Outcomes and Measures

The primary outcome was the trend in 30- and 90-day mortality after major emergency abdominal surgery over time.

Results

A total of 61 476 patients (mean [SD] age, 66.2 [16.3] years; 34 827 female [56.7%]) were included. The annual number of surgeries remained constant, with a mean (SD) of 3044 (165) surgeries per year. The 30- and 90-day mortality was reduced from 25% and 33%, respectively, to 13% and 18%, respectively (P < .001). Median (IQR) hospital length of stay was decreased from 10 (5-17) days to 6 (4-13) days (P < .001). The rate of 30-day postoperative complications (classified Clavien-Dindo ≥3a) was reduced from 49% to 44% (P <.001) and the 90-day rate was reduced from 53% to 48% (P <.001), however, with a tendency toward more patients undergoing earlier intervention. The 30- and 90-day readmission rate increased drastically from 9% and 13%, respectively, to 25% and 33%, respectively (P < .001).

Conclusions and Relevance

Results of this cohort study suggest notable reductions in mortality and hospital length of stay after major emergency abdominal surgery. A marked increased readmission rate and a persistently high rate of postoperative complications were found. These shifts underscore the need for enhanced postoperative monitoring and postdischarge follow-up.

Fissurectomy with or without anoplasty for chronic anal fissures is a valid alternative to lateral internal sphincterotomy: a retrospective cohort study of 475 patients

BACKGROUND

After the failure of conservative therapy, the most effective surgical treatment for chronic anal fissures (CAFs) is lateral internal sphincterotomy. However, the choice of the procedure must be always evaluated carefully due to the risk of long-term anal continence impairment. The aim of the present study is to report the outcomes of fissurectomy with or without associated anoplasty.

METHODS

This study is a single-center retrospective study including patients with CAFs in whom conservative medical and non-medical treatments failed and who underwent fissurectomy with or without anoplasty from January 2015 to June 2023. Fecal continence, pain, and complications were assessed using specific questionnaires and scores.

RESULTS

Overall, 475 patients [280 males (58.9%)] with CAF underwent fissurectomy, with (n = 392; 82.5%) or without (n = 83; 17.5%) anoplasty. The majority of them (n = 379; 79.8%) had a posterior fissure. The mean follow-up was 49.9 months ± 26.13 months, with a minimum of 1 year, showing no intraoperative complications and a 4.2% postoperative complication rate. Missed healing occurred in 7.15% of patients at 6 months of follow-up, with higher recurrence and sphincterotomy rates in posterior fissures (p = 0.04). Cleveland Clinic Incontinence Scores were higher in patients who underwent anoplasty (p = 0.002). Interestingly, anoplasty led to a significant decrease in visual analogue scale (VAS) scores (p < 0.001), compared with those who did not undergo the procedure, with a consequent faster recovery.

CONCLUSION

Our study showed that fissurectomy, whether performed with or without anoplasty, was a highly effective surgical option for treating CAFs, achieving an overall success rate of 92.8% without significant impairment of continence and with a low complication rate. Further randomized prospective trials are needed to confirm this finding. Interestingly, fissurectomy with anoplasty seems to allow for better short-term outcomes in terms of postoperative pain and recovery time compared with fissurectomy alone.

Analysis of the incidence of post-cholecystectomy diarrhea and its influencing factors in Hainan Province

BACKGROUND AND AIMS

Cholecystectomy is one of the most common surgical procedures for the treatment of diseases associated with gallstones, and the incidence of post-cholecystectomy diarrhea (PCD) has attracted attention in recent years. The aim of this study was to assess the prevalence of PCD in patients with gallstones and to analyze the factors influencing it.

METHODS

Between August 2022 and December 2024, there were 3385 cases of gallstones diagnosed by abdominal ultrasound or CT examination and laparoscopic cholecystectomy in tertiary hospitals in Hainan Province. All participants in this study were followed up by telephone within 1 year postoperatively and by telephone survey using a standardized questionnaire. The incidence of PCD was calculated, and the relevant components of the follow-up were analyzed by one-way and multifactorial logistic regression using SPSS 26.0 statistical software.

RESULTS

Four hundred seventy-nine patients (14.2%) developed PCD after undergoing laparoscopic cholecystectomy. Univariate analysis showed that age, BMI, dietary patterns, history of diabetes, alcohol consumption, gallstones and fatty liver disease were associated with the development of PCD ( P < 0.05). Binary logistic regression analysis showed that age (OR = 0.532, P = 0.010), BMI (OR = 40.615, P < 0.001), dietary patterns (OR = 0.635, P = 0.013), and history of diabetes (OR = 0.263, P < 0.001) were independent risk factors.

CONCLUSION

The incidence of PCD in Hainan Province is 14.2%. Over 50 years old, BMI, dietary pattern and history of diabetes were independent risk factors for the occurrence of PCD.

Minimally invasive surgery for acute groin hernias: A systematic review and meta-analysis

BACKGROUND

An open approach is widely used for the surgical treatment of acute groin hernia, however, in recent decades multiple studies have explored the safety and benefits of minimally invasive surgery (MIS) for acute groin hernia.

METHODS

A systematic literature search was performed on the electronic databases and meta-analysis was performed using the RevMan 5.4.1.

RESULTS

Our study identified that the MIS for acute groin hernia is associated with significantly lower rate of bowel resection with better outcomes than an open approach. Similarly, superficial surgical site infections (SSI) and length of stay (LOS) were also significantly lower in the MIS group. However, there was no significant difference in the duration of operation, use of prosthesis, overall postoperative morbidity, incidence of seroma, hematoma, deep SSI, and hernia recurrence between the two treatment approaches.

CONCLUSION

MIS for acute groin hernia is associated with better outcomes than the open approach in terms of outcomes like the bowel resection rate, superficial SSI, and LOS.

Assessment of the Nutraceutical Properties of Wild Strawberry (Fragaria vesca L.) Extracts on Human Colorectal Cell Lines

Colorectal cancer is the third most common cancer worldwide; its higher incidence in the Western world, compared to rural areas of Africa and Asia, led to its classification among the so-called Westernized diseases. The wild strawberry Fragaria vesca L. is endowed with several bioactive components, such as polyphenols, vitamins, terpenes, and organic acids that can contribute to cancer prevention. In this study, we chemically characterized a wild strawberry extract through high-resolution mass spectrometry and evaluated its antioxidant properties on two human colorectal cancer cell lines: KRAS mutated SW480 cells and E705 cells. We found that treatment with the extract induced cell cycle arrest in the G2 phase in SW480 cells, while it led E705 cells to apoptosis through a significant increase in the reactive oxygen species level. Wild strawberry extract is a promising dietary supplement for both wild-type and KRAS-mutated patients who exhibit a more aggressive cancer phenotype. In addition, the lack of toxicity of wild strawberry extract toward healthy colorectal cells makes this food a promising chemopreventive nutritional supplement.

Is there consensus on diagnostics and treatment in colonic diverticulitis? Results of international survey

BACKGROUND

Clinical guidelines (CGs) developed by expert communities benefit both the patient and the clinician. Meanwhile a considerable proportion of specialists are not familiar with or follow them in their daily practice. Colonic diverticulitis (CD) is the third most common cause of hospitalization among patients with gastrointestinal diseases and common indication for colon resection. Actual tactics for diagnosis and treatment of CD, as well as data on what influences its choice and how the decisions made agree with the existing CGs can be identified by anonymous surveys.

METHODS

An anonymous internet survey of surgeons and coloproctologists was conducted. Groups of questions included demographics of the respondents; self-esteem score; sources of guidance in decision-making; classification systems for CD; preferable diagnostic tests; management of CD; indications for elective surgery; and outcomes of surgical treatment and others (n = 17). The study was conducted in accordance with the CHERRIES criteria. The required minimum sample size was calculated as 377 participants.

RESULTS

The study involved 401 respondents from 9 countries: 76.1% were general surgeons and 14.5% were colorectal surgeons. Excellent or good knowledge of the problem was claimed by 82.8% of the colorectal vs 66.2% of the general surgeons (p = 0.013). In decision-making respondents were largely guided by their professional experience, methods adopted in their clinic and domestic CGs. General Surgeons more often chose tactics inconsistent with CGs than coloproctologists. The largest differences between subgroups were noted for awareness of the reversal of Hartmann's procedure, most common postoperative complications and indications for elective surgery.

CONCLUSION

Adherence to the existing CGs was poor, which entails significant variation in the approaches practiced by the respondents from different cohorts. There is no consensus on the aspects that are not yet covered in the CGs. Further research is needed to elucidate these gaps and update the guidelines accordingly.

Digital Decision Support for Perioperative Care of Patients With Type 2 Diabetes: A Call to Action

Unlabelled

Type 2 diabetes mellitus affects over 500 million people globally, with 10%-20% requiring surgery. Patients with diabetes are at increased risk for perioperative complications, including prolonged hospital stays and higher mortality, primarily due to perioperative hyperglycemia. Managing blood glucose during the perioperative period is challenging, and conventional monitoring is often inadequate to detect rapid fluctuations. Clinical decision support systems (CDSS) are emerging tools to improve perioperative diabetes management by providing real-time glucose data and medication recommendations. This viewpoint examines the role of CDSS in perioperative diabetes care, highlighting their benefits and limitations. CDSS can help manage blood glucose more effectively, preventing both hyperglycemia and hypoglycemia. However, technical and integration challenges, along with clinician acceptance, remain significant barriers.

Putative function and prognostic molecular marker of mast cells in colorectal cancer

BACKGROUND

The increased demand for markers for colorectal cancer (CRC) highlights the importance of investigating immune cells involved in CRC progression. This study aims to dissect the mast cells in CRC, characterize the role of mast cells in CRC development, coordinate molecular communication between mast cells and malignant cells, and construct and validate a prognostic classification model based on mast cell markers.

METHODS

Single-cell transcriptome data of CRC patients were extracted from GSE146771 for cell classification and annotation. The malignant cells were identified by copykat and the communication between mast cells and malignant cells was analyzed by CellChat. Least absolute shrinkage and selection operator (LASSO) regression analysis and Cox regression analysis of mast cell markers were performed in the TCGA-COAD cohort to construct a prognostic classification model. qRT-PCR was performed to detect the mRNA expression of the molecules in the classification model in P815 and MC-9 cells. The co-culture experiment of MC38 and P815 cells were performed in 12-well transwell dish. Wound healing assay and Transwell assay were performed to detect cell migration and invasion.

RESULTS

10,186 high-quality cells in GSE146771 were annotated to 9 cell types. Six markers in mast cells (HDC, GATA2, ASAH1, BTBD19, TIMP1, FAM110A) were selected to construct a classification model. The high-risk score defined showed high infiltration of immunosuppressive cells, including endothelial cells, CAFs, Tregs and high angiogenesis and epithelial-mesenchymal transition (EMT) activities. In the model, HDC were abnormally low expressed in P815 cells, while BTBD19, FAM110A, GATA2, ASAH1 and TIMP1 showed excessive expression in P815 cells. Knockdown of GATA2 in the co-culture system of P815 and MC38 cells blocked cell migration and invasion.

CONCLUSION

This study identified the cell types within CRC, elaborated the cellular functions of mast cells in CRC development and their molecular communication to coordinate malignant cells, and highlighted the molecular components and biological features that constitute promising prognostic classification model.

Robotic-assisted colorectal surgery in colorectal cancer management: a narrative review of clinical efficacy and multidisciplinary integration

Colorectal cancer (CRC) remains a formidable global health challenge, ranking among the most prevalent malignancies and a principal contributor to cancer-associated mortality. While traditional open surgery has historically been the cornerstone of CRC treatment, the advent of minimally invasive techniques, particularly robotic-assisted colorectal surgery (RACS), has garnered significant momentum owing to technological advancements in the field. Robotic platforms, exemplified by the da Vinci Surgical System, offer superior three-dimensional visualization, enhanced dexterity, and heightened precision, yielding improved perioperative outcomes, particularly in anatomically intricate regions such as the pelvis. This review provides a critical appraisal of the current landscape of RACS, emphasizing its superiority over conventional open and laparoscopic approaches. The increased control and precision afforded by robotic surgery have been shown to optimize outcomes in complex procedures such as total mesorectal excision, with evidence indicating reduced intraoperative blood loss, shortened hospital stays, and improved functional recovery. Nonetheless, challenges persist, including absence of haptic feedback, prohibitive costs, and steep learning curve associated with robotic systems. Despite these limitations, RACS has demonstrated considerable promise in sphincter-preserving and function-preserving procedures, ultimately enhancing postoperative quality of life. Beyond the surgical field, this review also investigates the integration of robotic surgery within multidisciplinary treatment strategies for CRC, particularly in the context of locally advanced rectal cancer. The combination of robotic techniques with total neoadjuvant therapy and immunotherapy-especially in tumors characterized by mismatch repair deficiency or high microsatellite instability has shown notable clinical efficacy. Furthermore, emerging personalized therapeutic approaches, including immunotherapies and targeted chemotherapeutic agents, emphasize the transformative potential of RACS in delivering superior oncologic outcomes. Looking towards the future, innovations in robotic platforms, including intraoperative imaging, artificial intelligence, and augmented reality, herald new possibilities for further enhancing the precision and efficacy of colorectal surgeries. The standardization of RACS protocols, alongside ongoing training and robust clinical research, will be critical to fully realizing the benefits of these advancements across diverse clinical settings. By incorporating cutting-edge technologies and personalized treatment methods, robotic-assisted surgery is prepared to become a cornerstone in future of CRC management, with the potential to significantly improve both survival outcomes and patient quality of life.

Implications of robotic platforms for repeat hepatectomies: a propensity score matched study of clinical outcomes

Robotic surgical approaches have demonstrated improved outcomes in primary hepatectomies. However, data on their effectiveness in redo hepatectomies (subsequent liver resections) are limited. This study aims to compare the outcomes of patients undergoing primary and redo robotic hepatectomies, with additional analysis comparing outcomes of robotic versus open redo hepatectomies. With IRB approval, we prospectively followed 101 patients from a parent population of 465, who were classified as either primary (non-redo) or redo robotic hepatectomy patients between 2013 and 2023. A Propensity Score Matched (PSM) analysis was conducted to compare perioperative variables between the two cohorts, using age, sex, BMI, IWATE score, tumor size, and tumor type as matching variables. Data are presented as median (mean ± standard deviation). Significance was accepted at p ≤ 0.05. After 3:1 PSM analysis (3 primary patients to 1 robotic redo patient), no significant differences were observed in pre-, intra-, or postoperative variables, except for the Model for End-Stage Liver Disease (MELD) score (p = 0.022). Additional analysis comparing robotic and open redo hepatectomies showed similar perioperative outcomes, with the robotic approach demonstrating comparable safety and feasibility. Length of stay, blood loss, operative duration, morbidity, and mortality showed no significant differences between the two groups. Major complications (Clavien-Dindo score ≥ III) occurred in 4% of non-redo patients, with none observed in the redo group. The findings suggest that patients undergoing redo robotic hepatectomies achieve outcomes comparable to those of primary hepatectomy patients. This indicates the potential of robotic platforms to mitigate the added complexities and risks associated with redo hepatectomies. Further multi-center collaboration is necessary to validate these findings.

Rotational flap versus long plantar flap for transmetatarsal amputation closure following revascularization

Objective

The integrity of the plantar flap is important for transmetatarsal amputation (TMA) classic closure. However, in ischemic wounds, the plantar flap can be compromised, making the TMA coverage difficult. The aim of this study was to compare the outcomes of rotational vs long plantar flaps for transmetatarsal amputation closure in patients with dysvascular partial foot amputations.

Methods

We conducted an observational study including revascularized patients with established forefoot gangrene who required TMA. The coverage was performed by classical long plantar flap or rotational flap due to the lack of adequate plantar skin. Seventeen patients were included in the study. TMA was performed after lower limb revascularization in all cases. We compared the wound healing and functional outcomes of the two groups (rotational vs long plantar flap).

Results

The mean age of the sample was 66.5 years (±8.3 years). Eight cases (47%) had open surgical bypass, and nine (53%) had endovascular procedures. Eight cases of rotational flaps (7 medial plantar rotational flaps) and nine classical long plantar flaps were analyzed. Our results demonstrated an overall healing rate of 77% in the sample. There was no significant difference between the surgical techniques evaluated. The healing percentage for the rotational flap group was 75% (6 cases) and 78% (7 cases) for the classical long plantar flap closure (P = .6).

Conclusions

Rotational flap provides a feasible alternative to classical long plantar flap for TMA coverage, showing a satisfactory healing rate for dysvascular foot following revascularization.

AUGUR-AIM: Clinical validation of an artificial intelligence indocyanine green fluorescence angiography expert representer

AIM

Recent randomized controlled trials and meta-analyses have demonstrated a reduction in the anastomotic leak rate when indocyanine green fluorescence angiography (ICGFA) is used versus when it is not in colorectal resections. We have previously demonstrated that an artificial intelligence (AI) model, AUGUR-AI, can digitally represent in real time where experienced ICGFA users would place their surgical stapler based on their interpretation of the fluorescence imagery. The aim of this study, called AUGUR-AIM, is to validate this method across multiple clinical sites with regard to generalizability, usability and accuracy while generating new algorithms for testing and determining the optimal mode of deployment for the software device.

METHOD

This is a prospective, observational, multicentre European study involving patients undergoing resectional colorectal surgery with ICGFA as part of their standard clinical care enrolled over a 1-year period. Video recordings of the ICGFA imagery will be computationally analysed both in real time and post hoc by AUGUR-AI, with the operating surgeon blinded to the results, testing developed algorithms iteratively versus the actual surgeon's ICGFA interpretation. AI-based interpretation of the fluorescence signal will be compared with the actual transection site selected by the operating surgeon and usability optimized.

CONCLUSION

AUGUR-AIM will validate the use of AUGUR-AI to interpret ICGFA imagery in real time to the level of an expert ICGFA user, building on our previous work to include a larger, more diverse patient and surgeon population. This could allow future progression to develop the AI model into a usable clinical tool that could provide decision support, including to new/infrequent ICGFA users, and documentary support of the decision made by experienced users.

Cost-effectiveness of robotic compared with laparoscopic rectal resection. Results from the Spanish prospective national trial ROBOCOSTES

OBJECTIVE

The costs related to robotic surgery are known to be greater than those associated with laparoscopy. However, the potential for better outcomes of the former could lead to a cost-effectiveness advantage. The aim of this study is therefore to highlight the difference in cost-effectiveness between robotic and laparoscopic rectal resection.

METHODS

This is an observational, multicenter, national prospective study (ROBOCOSTES). From 2022, for 1 year, all consecutive patients undergoing minimally invasive rectal resection were included. Quality-adjusted life year and cost data were prospectively collected. The primary aim was to assess the cost-effectiveness of robotic rectal resection and laparoscopic rectal resection . Secondary aims included clinical outcomes and quality of life.

RESULTS

Overall, 182 patients underwent rectal resection (152 anterior and 30 abdominoperineal excisions) at 14 centers, of whom 95 received robotic rectal resection and 87 laparoscopic rectal resection. Robotic rectal resection was associated with lesser blood loss (58.55 ± 51.68 vs 131.68 ± 191.92, P < .001), lower pain score at day 1 (-1.04 visual analog scale, P < .001) and day 7 (-0.81, P < .001) after surgery, and with fewer hospital readmissions (2.1% vs 15%, P = .005) compared with laparoscopic rectal resection. The overall costs of robotic rectal resection (including hospitalization) were 919.66 euros greater compared with laparoscopic rectal resection, but quality-adjusted life years in the robotic rectal resection group were better than laparoscopic approaches to rectal resection both at 30-day (0.8914 vs 0.8139) and 90-day (0.9573 vs 0.8740) follow-up. At a willingness-to-pay threshold of 20,000 and 30,000 euros, there was an 84.38% and 89.36% probability that robotic rectal resection was more cost-effective than laparoscopic rectal resection.

CONCLUSION

This study showed that robotic rectal resection, even if associated with greater direct costs in the short term, outperforms laparoscopic rectal resection in terms of quality-adjusted life years and should therefore be preferred where available.

Implementing sustainable practices to reduce wastage and costs in adenotonsillectomy

BACKGROUND

Surgical waste presents significant environmental and economic challenges in healthcare. Adenotonsillectomy, a common otolaryngological procedure, contributes to this issue. There is limited research on sustainability measures in adenotonsillectomy, and no studies have specifically identified waste reduction strategies for this operation in a general ENT unit. This study aimed to identify sustainable practices for waste reduction in adenotonsillectomy surgeries and quantify the extent of waste reduction in terms of weight and cost.

METHODS

The items opened and waste produced during adenotonsillectomies in a single institution were documented, including weights and costs. After reviewing the actual materials used by otolaryngologists and identifying potentially avoidable waste, a low-waste setup was designed. Waste weight and costs were evaluated post-implementation and compared with baseline values.

RESULTS

Several steps to reduce wastage in adenotonsillectomy surgeries were identified, including the elimination of surgical drapes and gowns. This resulted in a waste reduction of over 60%, with an average reduction in weight per case of 1.114 kg. The estimated reduction over 1 year for 294 cases was 327.52 kg. The mean reduction in material costs per case was $41.67, with an extrapolated annual savings of $12 250.98 for 294 cases.

CONCLUSION

Implementing sustainable practices in adenotonsillectomy surgeries can significantly reduce waste and healthcare facility cost, providing both environmental and economic benefits.

Clinical evidence and rationale of topical nifedipine and lidocaine ointment in the treatment of anal fissure and hemorrhoidal disease

INTRODUCTION

Anorectal conditions such as hemorrhoidal disease and anal fissure are frequently painful and debilitating. Pain after hemorrhoidectomy is also common and distressing. These conditions are at least initially managed conservatively. An ointment formulation containing the calcium channel blocker nifedipine and the local anesthetic lidocaine has an established role in the treatment of rectal conditions, particularly conditions associated with anal sphincter hypertonia such as hemorrhoidal disease and anal fissure. This review aimed to compile the evidence for the use of nifedipine 0.3% and lidocaine 1.5% ointment in treating these common but bothersome anorectal diseases.

EVIDENCE ACQUISITION

A comprehensive literature search was conducted, updated to 07 August 2024, using PubMed and MEDLINE databases to identify studies of lidocaine and nifedipine, alone or in combination, for the topical treatment of anal fissure or hemorrhoidal disease. Articles identified in the literature search were supplemented by ad hoc searches and supplemented by relevant literature known to the authors.

EVIDENCE SYNTHESIS

Nifedipine 0.3% and lidocaine 1.5% ointment is effective in relieving pain and aiding the resolution of thrombosed hemorrhoids, reducing resting anal pressure and healing chronic anal fissures, and controlling pain after hemorrhoidectomy. The ointment was significantly better than controls consisting of topical lidocaine 1.5% alone or in combination with hydrocortisone acetate 1%.

CONCLUSIONS

Although the available literature on the topical application of nifedipine and lidocaine in anorectal diseases is limited, nifedipine 0.3% and lidocaine 1.5% ointment should be considered a valid treatment option for clinicians treating anorectal diseases. Further studies are warranted to confirm and extend the results reported.

Angiogenesis and targeted therapy in the tumour microenvironment: From basic to clinical practice

Angiogenesis, as a core marker of cancer survival and growth, is integral to the processes of tumour growth, invasion and metastasis. In recent years, targeted angiogenesis treatment strategies have gradually become an important direction in cancer treatment. Single-cell sequencing technology can provide new insights into targeted angiogenesis by providing a deeper understanding of the heterogeneity of tumour endothelial cells and exploring the interactions between endothelial cells and surrounding cells in the tumour microenvironment. Here, we systematically review the research progress in endothelial cell pathophysiology and its endothelial‒mesenchymal transition and illustrate the heterogeneity of endothelial cells from a single-cell perspective. Finally, we examine the contributions of different cell types within the tumour microenvironment in relation to tumour angiogenesis, as well as the latest progress and strategies in targeted angiogenesis therapy, hoping to provide useful insights into the clinical application of antiangiogenic treatment. Furthermore, a summary of the present progress in the development of potential angiogenesis inhibitors and the ongoing clinical trials for combination therapies is provided. KEY POINTS: Angiogenesis plays a key role in tumour progression, invasion and metastasis, so strategies targeting angiogenesis are gradually becoming an important direction in cancer therapy. Interactions between endothelial cells and stromal cells and immune cells in the tumour microenvironment are significant in angiogenesis. The application of antiangiogenic immunotherapy and nanotechnology in antiangiogenic therapy provides a vital strategy for prolonging the survival of cancer patients.

Shared medical decision making

Involving the patient in medical decision-making is called shared medical decision-making (SMD). While the concept of SMD is nothing new, implementation has been slow to develop within current clinical practice, although there is growing interest in this topic in the scientific literature. SMD requires full agreement with the patient, who becomes an actor in their own care, and whose goals sometimes differ from those of the doctor. In a systematic review, it was reported that 75% of surgeons were in favor of SMD, while only 54% of patients favored it. The tools that support SMD can be extremely variable; they are not merely a document of information but must offer guidance to help the patients clarify their choices. They must allow for quality time for discussion, even though the time spent on SMD is perceived as a hindrance to its widespread adoption. The objectives of this work are to specify the essential steps in setting up SMD, and the assessment tools and applications for SMD in digestive surgery.

Integrating Bulk and Single-Cell RNA Sequencing Data Reveals the Prognostic Significance of HOXC9-Related Immune Gene Signatures in Hepatocellular Carcinoma

Objective

This study aims to integrate bulk and single-cell RNA sequencing data to construct a risk score model based on HOXC9-related immune genes (HRIGs) and evaluate its prognostic value in hepatocellular carcinoma (HCC).

Materials and Methods

RNA sequencing data and clinical information of HCC were obtained from TCGA and GEO databases. HRIGs were identified and a risk score model was constructed using LASSO-Cox regression analysis. The association between the risk score and tumor microenvironment was analyzed using CIBERSORT and ESTIMATE algorithms. Single-cell RNA sequencing (scRNA-seq) data were used to assess cell type distribution. Cell experiments were conducted to verify the effects of HOXC9 knockdown on HCC cell proliferation and invasion.

Results

HOXC9 is highly expressed in HCC and associated with poor prognosis (p=0.031). The risk score model based on four HRIGs (EGLN3, IMPDH1, LPCAT1, and MARCKSL1) showed good prognostic discrimination in both TCGA and GEO cohorts, with significantly lower overall survival in the high-risk group (p<0.0001). The high-risk group exhibited higher immune scores and increased immune cell infiltration, as well as elevated immune checkpoint expression. scRNA-seq revealed increased hepatocytes and fibroblasts but decreased T/NK cells in HCC tissues. HOXC9 knockdown significantly inhibited HCC cell proliferation and invasion.

Conclusion

HOXC9 is overexpressed in HCC and correlates with poor prognosis. The HRIG-based risk score model effectively evaluates the prognosis and immune response in HCC patients, providing new insights for risk assessment and immunotherapy prediction.

Propensity score matching analysis of perioperative outcomes during Hub&Spoke training program in hepato-biliary surgery

This study aims to verify the safety and effectiveness of complex surgical procedures like hepato-pancreatic and biliary (HPB) surgery also in General Surgery Units when performing an Hub&Spoke Learning Program (H&S) with a referral center. This approach leads reduction of health migration and related costs for patients and health system granting the same standard of medical and surgical care in Spoke Units. Implementation of H&S through a retrospective analysis of prospectively collected database comparing, after a Propensity Score Matching (PSM) analysis, baseline characteristics and peri-operative outcomes of patients undergone HPB surgery in a referral center (Hub) and in three peripheral centers (Spokes) under the mentoring program. Hub Hospital was represented by the Hepatobiliary and Pancreatic Surgery Center in Pineta Grande Hospital (Castel Volturno, Caserta, Italy), while the Spoke Units were the General Surgery Unit of Padre Pio Hospital (Mondragone, Caserta, Italy), the General Surgery Unit of C.T.O. Hospital (Naples, Italy) and the General and Emergency Surgery Unit of A. Cardarelli Hospital, University of Molise (Campobasso, Italy). During the partnership program, from January 2016 to June 2023, H&S enrolled 298 and 156 consecutive patients respectively. After PSM, data of 150 patients for each group were analyzed. After PSM no differences were found concerning patients baseline characteristics. Hub group selected more often primary liver cancers versus benign lesions and liver metastasis more frequent in the Spoke group. All peri-operative data were superimposable except for blood transfusion, Pringle maneuver and length of hospital stay that were more frequent in the Hub group. We can conclude that the treatment of liver cancers in peripheral centers is possible, safe and effective especially under a H&S. There are some requisites to be successful like experienced surgeon(s), interdisciplinary meetings to discuss and minimum requirements in each hospital such as Intensive Care Unit, interventional radiology and emergency facilities.

Small bowel obstruction outcomes according to compliance with the World Society of Emergency Surgery Bologna guidelines

BACKGROUND

Small bowel obstruction (SBO) is a common surgical emergency associated with substantial morbidity, hospital length of stay (LOS), and healthcare cost. The World Society of Emergency Surgery (WSES) Bologna guidelines provide evidence-informed recommendations for managing adhesive SBO, promoting timely surgical intervention (or non-operative management (NOM) when ischaemia, strangulation, or peritonitis are absent). However, guideline adoption and its impact on outcomes remain under studied. Compliance with the Bologna guidelines was evaluated to determine the impact of compliance on outcomes.

METHODS

SnapSBO, a prospective, multicentre, time-bound, observational cohort study, captured data on patients with adhesive SBO across diverse healthcare settings and patient populations. Patient care was categorized into: successful NOM, surgery after an unsuccessful appropriate trial of NOM (NOM-T), and direct to surgery (DTS). Compliance with diagnostic, therapeutic, and postoperative Bologna guideline recommendations was assessed as either complete or partial. Primary outcomes included adherence to the Bologna guidelines, LOS, complications, and the incidence of the composite metric 'optimal outcomes' (LOS ≤5 days, discharge without complications, and no readmission within 30 days).

RESULTS

Among 982 patients with adhesive SBO, successful NOM occurred in 561 (57.1%), 224 (22.8%) underwent NOM-T, and 197 (20.1%) proceeded DTS. The mean(s.d.) LOS was 5.3(9.0), 12.9(11.4), and 7.7(8.0) days respectively (P < 0.001). Optimal outcomes were achieved in 61.0%, 16.1%, and 37.6% respectively (P < 0.001) and full guideline compliance was observed in 17.2%, 10.1%, and 0.4% respectively.

CONCLUSION

Patients with adhesive SBO whose care was aligned with the Bologna guidelines had a shorter LOS and a greater incidence of optimal outcomes. Addressing evidence-to-practice gaps through implementation strategies that consider contextual factors will enhance guideline adoption and patient outcomes.

A Greener Vascular Surgery: A Survey of Current Green Practices

BACKGROUND

Climate change is an environmental emergency. With health care systems contributing to 5% of carbon emissions globally, environmental sustainability is an important consideration when delivering surgical services. This survey aimed to understand current green practices across vascular centers.

METHODS

A survey on routine sustainable practices and the feasibility of implementing greener practices was developed between the Vascular and Endovascular Research Network and the Vascular Society of Great Britain and Ireland. The survey was delivered using the Qualtrics online survey tool and distributed through mailing lists and social media. The survey was open to completion by all vascular health care professionals internationally. Responses were collected between June 2, 2023, and September 15, 2023.

RESULTS

A total of 115 vascular health care professionals across 14 different countries responded. Disposable theater materials were used in 85% (98/115) of respondents' centers. Most centers used electronic patient records (investigation requests [76%, 85/112], observation charts [81%; 91/112], prescriptions [74%; 83/112]). Paper recycling policies were available in 52% (58/112) of respondents' centers. All the respondents agreed that vascular surgery can be greener. 80% (92/115) of respondents reported environmental sustainability was never discussed in departmental meetings and 24% (28/115) reported their department engaged with management to implement more sustainable practices. Barriers to change included finance (77%, 89/115), competing priorities (84%, 97/115), and lack of engagement (82%, 94/115).

CONCLUSION

This survey identified areas where vascular services could be more environmentally friendly, including reducing the use of disposable materials and improving recycling. Vascular health professionals are largely supportive of implementing changes to reduce the carbon footprint.

A cost-effective predictive tool for AFP-negative focal hepatic lesions of retrospective study: enhancing clinical triage and decision-making

Background

Identifying alpha-fetal protein (AFP)-negative focal hepatic lesions presents a significant challenge, particularly in China. We sought to develop an economically portable tool for the diagnosis of benign and malignant liver lesions with AFP-negative status, and explore its clinical diagnostic efficiency.

Methods

A retrospective study was conducted at Peking University Shenzhen Hospital from January 2017 to February 2023, including a total of 348 inpatients with AFP-negative liver space-occupying lesions. The study used a training set of 252 inpatients from January 2017 to September 2021 to establish a diagnostic model for differentiating benign and malignant AFP-negative liver space-occupying lesions. Additionally, a validation cohort of 96 inpatients from October 2021 to February 2023 was used to confirm the diagnostic performance of the model. From January 2017 to February 2023, patients at JingNing People's Hospital, Gansu Province were assigned to the external cohort (n = 78).

Results

A predictive tool was established by screening age, gender, hepatitis B virus (HBV)/hepatitis C virus (HCV) infected, single lesion, alanine amino transferase (ALT), and lymphocyte-to-monocyte ratio (LMR) using multivariate logistic regression analysis and clinical practice. The area under the curve (AUC) of the model was 0.911 (95% CI [0.873-0.949]) in the training set and 0.882 (95% CI [0.815-0.949]) in the validation cohort. In addition, the model achieved an area under the curve of 0.811 (95% CI [0.687-0.935]) in the external validation cohort.

Conclusion

Our results demonstrated that the predictive tool has the characteristics of good diagnostic efficiency, economy and convenience, which is helpful for the clinical triage and decision-making of AFP-negative liver space-occupying lesions.

A modified multi-angle suture training module for laparoscopic training curriculum on emergency intestinal surgery

BACKGROUND

Intestinal perforation and intestinal obstruction are common emergency surgeries in clinics which often require intestinal resection and anastomosis. Most intestinal anastomosis can be completed by laparoscopy. The wound closure module In the Fundamentals of Laparoscopic Surgery (FLS) program is traditionally used for laparoscopic suture and knotting training. However, many young surgeons tend to focus on practicing suture techniques from certain or a limited range of angles. This narrow approach increases the difficulty of complex suturing and knotting in clinical scenarios such as laparoscopic intestinal anastomosis.

METHODS

To address this issue, we designed a multi-angle suture module specifically for suture and knotting training. Thirty-six second-year surgical residents were recruited for the study. Twelve residents were randomly divided at a 1:1 ratio into the traditional suture group and the multi-angle suture group according to their basic laparoscopic surgical ability. After training, they were required to perform laparoscopic end-to-end anastomosis surgery on isolated swine intestines.

RESULTS

The operation times, goal scores and surgical performance scores of the surgeries were collected and compared. Trainees who used the multi-angle suture training module shortened the operation time (3375.7 ± 1000 s vs. 4678.2 ± 684.7, p = 0.008) and achieved better surgical effects (operation performance score: 8.2 ± 1.5 vs. 6.83 ± 1.3, p = 0.041) in end‒end intestine anastomosis surgery than did those who used the traditional suture training module.

CONCLUSIONS

The multi-angle suture training module effectively improved the laparoscopic suture skills of trainees and is therefore a better choice for laparoscopic suture and knotting training before doing laparoscopic intestinal anastomosis.

Perioperative risk assessment for emergency general surgery in those with multimorbidity or frailty

PURPOSE OF REVIEW

This review explores advances in risk stratification tools and their applicability in identifying and managing high-risk emergency general surgery (EGS) patients.

RECENT FINDINGS

Traditional risk assessment tools have several limitations when applied to complex EGS patients as comorbidities are generally treated in a binary, linear and sequential fashion. Additionally, some tools are only usable in the postoperative period, and some require multidisciplinary involvement and are not suitable in an emergency setting. Frailty in particular - for which there are multiple calculators-maladaptively influences outcomes. Artificial intelligence tools, such as the machine-learning-based POTTER calculator, demonstrate superior performance by addressing nonlinear interactions among patient factors, offering a dynamic and more accurate approach to risk prediction.

SUMMARY

Integrating advanced, data-driven risk assessment tools into clinical practice can help identify and manage high-risk patients as well as forecast outcomes for EGS patients. Such tools are intended to trigger preoperative interventions as well as discussions that ensure goal-concordant care, align expectations with anticipated outcomes and support both facility and patient-relevant outcomes.

International expert consensus on the current status and future prospects of artificial intelligence in metabolic and bariatric surgery

Artificial intelligence (AI) is transforming the landscape of medicine, including surgical science and practice. The evolution of AI from rule-based systems to advanced machine learning and deep learning algorithms has opened new avenues for its application in metabolic and bariatric surgery (MBS). AI has the potential to enhance various aspects of MBS, including education and training, decision-making, procedure planning, cost and time efficiency, optimization of surgical techniques, outcome and complication prediction, patient education, and access to care. However, concerns persist regarding the reliability of AI-generated decisions and associated ethical considerations. This study aims to establish a consensus on the role of AI in MBS using a modified Delphi method. A panel of 68 leading metabolic and bariatric surgeons from 35 countries participated in this consensus-building process, providing expert insights into the integration of AI in MBS. Of the 28 statements evaluated, a consensus of at least 70% was achieved for all, with 25 statements reaching consensus in the first round and the remaining three in the second round. Experts agreed that AI has the potential to enhance the evaluation of surgical skills in MBS by providing objective, detailed assessments, enabling personalized feedback, and accelerating the learning curve. Most experts also recognized AI's role in identifying qualified candidates for MBS referrals, helping patient and procedure selection, and addressing specific clinical questions. However, concerns were raised about the potential overreliance on AI-generated recommendations. The consensus emphasized the need for ethical guidelines governing AI use and the inclusion of AI's role in decision-making within the patient consent process. Furthermore, the results suggest that AI education should become an essential component of future surgical training. Advancements in AI-driven robotics and AI-integrated genomic applications were also identified as promising developments that could significantly shape the future of MBS.

Systematic review on the use of artificial intelligence to identify anatomical structures during laparoscopic cholecystectomy: a tool towards the future

PURPOSE

Bile duct injury (BDI) during laparoscopic cholecystectomy (LC) is a dreaded complication. Artificial intelligence (AI) has recently been introduced in surgery. This systematic review aims to investigate whether AI can guide surgeons in identifying anatomical structures to facilitate safer dissection during LC.

METHODS

Following PROSPERO registration CRD-42023478754, a Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA)-compliant systematic search of MEDLINE (via PubMed), EMBASE, and Web of Science databases was conducted.

RESULTS

Out of 2304 articles identified, twenty-five were included in the analysis. The mean average precision for biliary structures detection reported in the included studies reaches 98%. The mean intersection over union ranges from 0.5 to 0.7, and the mean Dice/F1 spatial correlation index was greater than 0.7/1. AI system provided a change in the annotations in 27% of the cases, and 70% of these shifts were considered safer changes. The contribution to preventing BDI was reported at 3.65/4.

CONCLUSIONS

Although studies on the use of AI during LC are few and very heterogeneous, AI has the potential to identify anatomical structures, thereby guiding surgeons towards safer LC procedures.

Ezetimibe mediated RPS6KA2 inhibits colorectal cancer proliferation via PCSK9/MAPK signaling pathway

To investigate the effect and molecular mechanism of ezetimibe on colorectal cancer (CRC), our study found that ezetimibe significantly inhibited the proliferation and progression of CRC. Further study showed that RPS6KA2 might be the target gene of ezetimibe treatment on CRC. RPS6KA2 expression was significantly lower in human CRC tissue samples and associated with T classification and vascular invasion of tumor cells. RPS6KA2 inhibited proliferation, migration, and invasion of CRC cells. The underlying mechanisms indicated that interaction between RPS6KA2 and PCSK9 was observed within the cytoplasmic compartment of CRC cells. RPS6KA2 suppressed PCSK9 and MAPK signaling pathway in CRC cells. BI-D1780 which is an inhibitor of RPS6KA2 increased PCSK9 and MAPK signaling pathway related proteins expression in SW620 cells. However, an inhibitor or stimulator of MAPK did not affect RPS6KA2 and PCSK9 expression, respectively. In vivo, CRC cells with RPS6KA2 or PCSK9 overexpression could inhibit or promote tumor growth and metastasis, respectively. PCSK9 promoted proliferation, migration, and invasion of CRC cells. PCSK9 expression was higher in human CRC samples and associated with N classification and TNM stage of CRC. In conclusion, our study firstly suggests that ezetimibe suppresses CRC progression by upregulating RPS6KA2 while downregulating PCSK9/MAPK signaling pathway.

Recent advances in the mechanisms of PD-L1 expression in gastric cancer: a review

In the progression of gastric cancer (GC), various cell types in the tumor microenvironment (TME) exhibit upregulated expression of programmed death ligand 1 (PD-L1), leading to impaired T-cell function and evasion of immune surveillance. Infection with H. pylori and EBV leads to increased PD-L1 expression in various cell types within TME, resulting in immune suppression and facilitating immune escape of GC cells. In the TME, mesenchymal stem cells (MSCs), M1-like tumor-associated macrophages (MI-like TAM), and myeloid-derived suppressor cells (MDSCs) contribute to the upregulation of PD-L1 expression in GC cells. Conversely, mast cells, M2-like tumor-associated macrophages (M2-like TAM), and tumor-associated neutrophils (TANs) exhibit elevated levels of PD-L1 expression in response to the influence of GC cells. Together, these factors collectively contribute to the upregulation of PD-L1 expression in GC. This review aims to provide a comprehensive summary of the cellular expression patterns of PD-L1 in GC and the underlying molecular mechanisms. Understanding the complex regulatory pathways governing PD-L1 expression may offer novel insights for the development of effective immunotherapeutic interventions.

Progress in the application of machine learning in CT diagnosis of acute appendicitis

Acute appendicitis represents a prevalent condition within the spectrum of acute abdominal pathologies, exhibiting a diverse clinical presentation. Computed tomography (CT) imaging has emerged as a prospective diagnostic modality for the identification and differentiation of appendicitis. This review aims to synthesize current applications, progress, and challenges in integrating machine learning (ML) with CT for diagnosing acute appendicitis while exploring prospects. ML-driven advancements include automated detection, differential diagnosis, and severity stratification. For instance, deep learning models such as AppendiXNet achieved an AUC of 0.81 for appendicitis detection, while 3D convolutional neural networks (CNNs) demonstrated superior performance, with AUCs up to 0.95 and an accuracy of 91.5%. ML algorithms effectively differentiate appendicitis from similar conditions like diverticulitis, achieving AUCs between 0.951 and 0.972. They demonstrate remarkable proficiency in distinguishing between complex and straightforward cases through the innovative use of radiomics and hybrid models, achieving AUCs ranging from 0.80 to 0.96. Even with these advancements, challenges remain, such as the "black-box" nature of artificial intelligence, its integration into clinical workflows, and the significant resources required. Future directions emphasize interpretable models, multimodal data fusion, and cost-effective decision-support systems. By addressing these barriers, ML holds promise for refining diagnostic precision, optimizing treatment pathways, and reducing healthcare costs.

Clinically Evident Portal Hypertension Is an Independent Risk Factor of Hepatocellular Carcinoma Recurrence Following Liver Transplantation

Background/Objectives: Clinically evident portal hypertension (CEPH) is a major risk factor for the development and poor outcomes of hepatocellular carcinoma (HCC). The aim of this study was to determine the impact of CEPH on the risk of HCC recurrence following liver transplantation (LT). Methods: A total of 129 HCC patients were included in this retrospective analysis. The definition of CEPH was based on indirect clinical features without hepatic venous pressure gradient measurement. The impact of CEPH on the post-LT risk of HCC recurrence was determined by uni- and multivariate analysis. Results: Evidence of manifest portal hypertension (PH) was associated with a higher 18F-fluorodeoxy-glucose (FDG) uptake of HCC on positron emission tomography (PET; p < 0.001) and increased serum levels of C-reactive protein (p = 0.008) and interleukin-6 (IL-6; p = 0.001). The cumulative risk of HCC recurrence at 5 years post-LT was significantly higher in the CEPH group (38.1% vs. 10.6%, p < 0.001). The eligibility for neoadjuvant transarterial chemoembolization (TACE) was comparable between both study cohorts (71.4% vs. 74.2%; p = 0.719). However, the post-interventional pathologic response rate was significantly lower in the case of PH (15.6% vs. 53.1%; p < 0.001). In addition to the Milan criteria (MC), 18F-FDG avidity on PET and serum values of IL-6 and alfa-fetoprotein, we identified CEPH as another significant and independent predictor of HCC recurrence (p = 0.008). Conclusions: CEPH correlates with an unfavorable tumor phenotype, TACE refractoriness and a risk of post-LT HCC recurrence. Therefore, the clinical features of PH should be implemented in pre-transplant risk assessment and decision-making processes.

Preoperative Assessment of Ki-67 Labeling Index in Pituitary Adenomas Using Delta-Radiomics Based on Dynamic Contrast-Enhanced MRI

BACKGROUND

Ki-67 labeling index (Ki-67 LI) is a proliferation marker that is correlated with aggressive behavior and prognosis of pituitary adenomas (PAs). Dynamic contrast-enhanced MRI (DCE-MRI) may potentially contribute to the preoperative assessment of Ki-67 LI.

PURPOSE

To investigate the feasibility of assessing Ki-67 LI of PAs preoperatively using delta-radiomics based on DCE-MRI.

STUDY TYPE

Retrospective.

POPULATION

605 PA patients (female = 47.1%, average age = 52.2) from two centers (high Ki-67 LI (≥ 3%) = 229; low Ki-67 LI (< 3%) = 376), divided into a training set (n = 313), an internal validation set (n = 196), and an external validation set (n = 96).

FIELD STRENGTH/SEQUENCE

1.5-T and 3-T, DCE-MRI.

ASSESSMENT

This study developed a non-delta-radiomics model based on the non-delta-radiomic features directly extracted from four phases, a delta-radiomics model based on the delta-radiomic features, and a combined model integrating clinical parameters (Knosp grade and tumor diameter) with delta-radiomic features. U test, recursive feature elimination (RFE), and least absolute shrinkage and selection operator (LASSO) regression were utilized to select important radiomic features. Support vector machine (SVM), XGBoost (XGB), logistic regression (LR), and Gaussian naive Bayes (GNB) were utilized to develop the models.

STATISTICAL TESTS

Receiver operating characteristic (ROC) curve. Calibration curve. Decision curve analysis (DCA). Intraclass correlation coefficients (ICC). DeLong test for ROC curves. U test or t test for numerical variables. Fisher's test or Chi-squared test for categorical variables. A p-value < 0.05 was considered statistically significant.

RESULTS

The combined model demonstrated the best performance in preoperatively assessing the Ki-67 LI of PAs, achieving AUCs of 0.937 and 0.897 in the internal and external validation sets, respectively. The models based on delta-radiomic features outperformed the non-delta-radiomic model.

DATA CONCLUSION

A delta-radiomics-based model using DCE-MRI may show high diagnostic performance for preoperatively assessing the Ki-67 LI status of PAs.

EVIDENCE LEVEL

3 Technical Efficacy: Stage 2.

A Nanostring gene expression approach identifies aggressive clinical behavior related genes in dedifferentiated liposarcoma

Dedifferentiated liposarcoma (DDLPS) is one of the most common subtypes of soft tissue sarcoma with a highly variable clinical behavior. Despite advanced molecular approaches are exploring the genetic panorama of DDLPS progression, to date the driver genes of the aggressive clinical behavior in DDLPS have not been identified yet. Here, we used a Nanostring nCounter approach to study the gene expression profile of 60 selected genes involved in DDLPS progression, in a cohort of DDLPS with aggressive clinical behavior, in comparison to a cohort of DDLPS with indolent clinical behavior. We identified five genes whose expression is significantly and consistently altered in aggressive compared to indolent DDLPS. Moreover, by a clinical outcome analyses we found MAP3K12 gene expression linked with both a higher risk of metastases and death. We envisage that the identified genes could represent the first genes of a genetic signature able to predict the clinical evolution of a DDLPS.

MYOSLID: A Critical Modulator of Cancer Hallmarks

Despite being the leading cause of death worldwide, cancer still lacks precise biomarkers for effective targeting, limiting efforts to reduce mortality rates. This review explores the role and clinical significance of a newly identified long non-coding RNA, MYOSLID, in cancer progression. MYOSLID has emerged as a critical modulator in cancer progression by influencing key hallmarks such as proliferation, immune evasion, metastasis, and metabolic reprogramming. It promotes tumor cell growth by stabilizing hypoxia-inducible factor 1 and acting as a competing endogenous RNA (ceRNA) to sequester tumor-suppressive microRNAs like miR-29c-3p, thereby enhancing oncogene expression. It facilitates immune evasion by upregulating PD-L1, suppressing T cell activation, and modulating necroptosis pathways involving RIPK1 and RIPK3. Additionally, MYOSLID drives metastasis by regulating epithelial-mesenchymal transition markers such as LAMB3 and Slug while promoting RAB13-mediated cytoskeletal remodeling and enhancing cancer cell invasion. We have obtained the expression of MYOSLID from TCGA and the ENCORI database. The expression of colorectal adenocarcinoma (COAD) and head and neck squamous cell carcinoma (HNSCC) is associated with poor prognosis and lower survival rate. Given its significant potential as a diagnostic biomarker and therapeutic target, further research is required to elucidate its precise molecular mechanisms and therapeutic applications in cancer treatment.

The efficacy of transcatheter arterial chemoembolization for hepatocellular carcinoma: is the alteration of the inflammation index important?

Introduction

Transcatheter arterial chemoembolization (TACE) is widely applied for locoregional malignant lesions control in intermediate and selected advanced hepatocellular carcinoma (HCC). Various inflammation indices, such as neutrophil-to-lymphocyte ratio (NLR), lymphocyte-to-monocyte ratio (LMR), platelet-to-lymphocyte ratio (PLR), systemic immune inflammatory index (SII), and Lymphocyte-to-C Reactive Protein Ratio (LCR) have been explored as tools for predicting the efficacy of TACE. However, the role and predictive value for dynamic changes of peripheral inflammatory indicators pre- and post-TACE remains unclear.

Objective

To explore the association between the alteration in inflammatory index and the efficacy and prognosis of TACE and to provide more evidence for early prediction of the efficacy of TACE.

Methods

This was a retrospective single-center study. HCC patients who received TACE as initial treatment were enrolled. The relationship between the alteration of inflammation indices (calculated as post-TACE minus pre-TACE measurements) and TACE efficacy and prognosis was investigated. Progression-free survival (PFS) was the primary endpoint, and treatment efficacy was evaluated based on mRECIST criteria.

Results

Before propensity score matching (PSM), the change in LMR was significantly associated with treatment effective rate, with the unelevated ΔLMR group achieving a 79.4% treatment effective rate compared to 36.4% in the elevated group (p < 0.001). The estimated median PFS was 9.7 months and 4.5 months in the unelevated and elevated group, with a significant difference (p = 0.016). After PSM, the treatment effective rate was 48.7 and 38.5% (p = 0.214), and the estimated median PFS was 8.9 and 5.5 months (p = 0.173) for the unelevated and elevated group, respectively.

Conclusion

Our study demonstrated that alteration of indices of peripheral inflammation, including ΔNLR, ΔLMR, ΔSII, and ΔPLR, may not be valuable prognostic markers for HCC patients who received TACE.

A case report of HER2-positive descending colon cancer with peritoneal metastasis and literature review

Human epidermal growth factor receptor 2 (HER2) is an anti-cancer drug target for colon cancer. Among patients with colorectal malignancy (colorectal cancer, CRC), those with HER2 mutations have a poor overall prognosis and a significantly increased drug resistance. In recent years, anti-HER2 therapeutic drugs have developed rapidly. According to several clinical studies and case reports, anti-HER2 therapy, as an emerging anti-cancer approach, plays a crucial role in the treatment of HER2-positive CRC patients. Here, we present a case of HER2-positive descending colon cancer with peritoneal metastasis. The patient is a 26-year-old male, diagnosed with malignant tumor of the descending colon with peritoneal metastasis in April 2020. After multiple treatment modalities, the disease progressed. After chemotherapy with Trastuzumab Deruxtecan (T-DXd/DS-8201), the metastatic foci significantly shrank, and after surgical resection, a tumor-free state (NED) was achieved. Up to now, the patient's survival period has reached 56 months.

Multimodal ultrasound assessment for monitoring keloid severity and treatment response

The current understanding and a standardized assessment or treatment guidelines for keloids are not fully established, highlighting the need for an objective method to gauge keloid severity and treatment outcomes. This study investigated the clinical utility of multimodal ultrasound, integrating Shear Wave Elastography (SWE) and Angio planewave ultrasensitive imaging (AP), to assess keloid severity and treatment responses in 58 keloids across 31 patients. Keloids were categorized into mild, moderate, and severe based on Vancouver Scar Scale (VSS) scores. The results revealed significant differences in keloid thickness, elasticity parameters, and blood flow levels among severity groups, with the AP technique demonstrated superior sensitivity in detecting keloid microcirculation. Additionally, the study evaluated the therapeutic response to Strontium-90 Yttrium-90 isotope applicator treatment in 28 keloids, categorizing them into 13 good responders and 15 poor responders based on improvements observed in their VSS scores. Good responders demonstrated marked improvements post-treatment, including significant flattening of the keloids, decreased stiffness, and normalization of blood flow levels. In contrast, poor responders exhibited minimal changes in keloid thickness, stiffness, and blood flow signals following treatment. These findings underscore the effectiveness of multimodal ultrasound in evaluating treatment responses in keloid management. In conclusion, multimodal ultrasound, focusing on SWE and AP modalities, offers a promising tool for comprehensive assessment, with potential to enhance keloid evaluation and track treatment responses across varying therapeutic interventions, thereby facilitating optimized clinical management and guiding personalized treatment. The study was successfully registered on ClinicalTrials.gov on 12/09/2023, with the Identifier NCT06034587.

Frailty in robotic pancreaticoduodenectomy: quantifying the impact on perioperative outcomes

BACKGROUND

We sought to determine the significance of age and frailty in predicting peri-operative outcomes of robotic pancreaticoduodenectomy (RPD).

METHODS

Data from our institution's prospectively collected robotic pancreaticoduodenectomy database was analyzed for the years 2018-2023. The 5-factor modified frailty index (mFI-5) was used as a concise stratification tool for frailty. Predictive models for composite adverse event (CAE) variable were created using adjusted logistic regressions.

RESULTS

116 patients underwent RPD. Mean age of this cohort was 70.65 years (±11.44). The mean operative time was 311.47 min (±71.35) and the estimated blood loss was 107.07 mL (±128.49). The most common postoperative complications included in the CAE were pancreatic leak (n = 10, 8.62 %), delayed gastric emptying (n = 10, 8.62 %), bleeding (n = 5, 4.31 %), and atrial fibrillation (n = 2, 1.72 %). The 90-day mortality was 1.72 %. There was a gradual increase in the odds ratio of CAE with increasing mFI-5 score: OR 1.52 (95 % CI 0.25-9.20) for mFI-5 score of 1 and OR 31.92 (95 % CI 1.79-570.09) for mFI-5 score of 4 compared to score of 0.

DISCUSSION

Preoperative mFI-5 score may serve as a risk stratification tool for RPDs.

Immunohistochemical Evaluation of the Tumor Immune Microenvironment in Pancreatic Ductal Adenocarcinoma

Background: Pancreatic ductal adenocarcinoma is an aggressive neoplasm with a complex carcinogenesis process that must be understood through the interactions between tumor cells and tumor microenvironment cells. Methods: This study was retrospective with a chronological extension period of 16 years and included 56 cases of pancreatic ductal adenocarcinoma. This study identified, quantified, and correlated the cells of the tumor immune microenvironment in pancreatic ductal adenocarcinoma with major prognostic factors as well as overall survival, using an extensive panel of immunohistochemical markers. Results: Three tumor immunotypes were identified: subtype A (hot immunotype), subtype B (intermediate immunotype), and subtype C (cold immunotype). Patients with immunotype C exhibit considerably higher rates of both pancreatic fistulas and acute pancreatitis. Immunotypes B and C significantly increased the risk of this complication by factors of 3.68 (p = 0.002) and 3.94 (p = 0.001), respectively. The estimated probabilities of fistula formation for each immunotype are as follows: 2.5% for immunotype A, 25% for immunotype B, and 28% for immunotype C. There was a statistically significant difference in median survival times according to tumor immunotype (p < 0.001). Specifically, patients with immunotype C tumors had a median survival time of only 120.5 days, compared to 553.5 days for those with immunotype A and 331.5 for immunotype B tumors. Conclusions: The identification of the immunotype of pancreatic ductal adenocarcinoma can be a predictive factor for the occurrence of complications such as pancreatic fistula as well as for overall survival.

Healthcare metaverse in surgery: scoping review

BACKGROUND

The metaverse is an emerging concept in surgery, with much interest in its highly immersive and interactive virtual environment. Despite the growing interest and importance in healthcare, the metaverse is still very much in its early phase of evolution and adoption in surgery, with debate on its definition and components. This scoping review provides a summary of the evidence and current understanding for the use of the metaverse in surgery.

METHODS

Embase and MEDLINE were searched using scoping review methodology with a systematic search strategy, identifying any study examining the role of the metaverse in surgery without time limitation. After data extraction, a narrative synthesis was conducted to identify the components of the metaverse employed within surgery and the domains in which they were applied.

RESULTS

Of 97 articles found through the initial search, 15 studies were eligible for inclusion. Most of the studies were expert opinion pieces (46.6%), urology was the most common specialty (33.3%), and all studies were published after 2020. Studies were widely heterogeneous in study design and outcomes varied. The surgical metaverse was used across four main domains: education (53%), training (80%), operations (67%), and surgical care (53%).

CONCLUSION

Surgery is rapidly moving towards the age of the metaverse. There is great potential; however, evidence is lacking on its effectiveness and there are risks associated with its implementation. Institutions must learn how to understand and safely adopt the metaverse into their domains of education, training, operations, and surgical care.

Swedish national guidelines for diagnosis and management of acute appendicitis in adults and children

BACKGROUND

Acute appendicitis is one of the most common causes of acute abdominal pain. Differences in the management of this large group of patients has important consequences for the patients and the healthcare system. Controversies regarding the understanding of the natural course of the disease, the utility of new diagnostic methods, and alternative treatments have lead to large variations in practice patterns between centres. These national guidelines present evidence-based recommendations aiming at a uniform, safe and cost-efficient management of this large group of patients.

METHOD

A working group of six experts with broad clinical and research experience was formed. Additional expertise from outside was consulted during the process. A national survey revealed significant variations in the management of patients with suspicion of appendicitis. The evidence provided in published guidelines and reviews were extracted and systematically graded, according to the GRADE methodology. This was supplemented by additional more recent and more directed search of the literature. Patients treated for appendicitis were involved through interviews. The guidelines were reviewed by external experts before the final version was determined.

RESULTS

The guidelines cover an extensive number of issues: pathology, epidemiology, aetiology, natural history, clinical and laboratory diagnosis, diagnostic scoring systems, diagnostic imaging, treatment, nursing care, follow-up, quality registers and quality indicators, among others. Special considerations related to children and pregnant women are covered.

CONCLUSION

These national guidelines present an extensive and thorough review of the current knowledge base related to appendicitis, and provide up-to-date evidence-based recommendations for the management of this large group of patients.

Multimodal carcinoembryonic antigen-targeted fluorescence and radio-guided cytoreductive surgery for peritoneal metastases of colorectal origin: single-arm confirmatory trial

BACKGROUND

Selection of suitable candidates for intraoperative tumour detection and cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC) is important for improving outcomes for patients with colorectal peritoneal metastases. Previous research demonstrated the use of single-photon emission computed tomography (SPECT), intraoperative radiodetection, and near-infrared fluorescence (NIRF)-guided surgery with a dual-labelled 111In-labelled dodecane tetra-acetic acid (DOTA)-labetuzumab-IRDye800CW tracer to detect peritoneal metastases before operation. The aim of this study was to validate these results.

METHODS

A single-centre phase II study was conducted to evaluate the safety and feasibility of 111In-labelled DOTA-labetuzumab-IRDye800CW in patients with colorectal peritoneal metastases undergoing CRS-HIPEC. SPECT/computed tomography (CT) was undertaken before surgery, after intravenous administration of 10 mg 111In-labelled DOTA-labetuzumab-IRDye800CW (mean 101.25 MBq). During surgery, radiodetection and NIRF imaging were used for tumour detection. Adverse events were assessed, and tumour-to-background ratios (TBRs) and peritoneal cancer index scores were analysed.

RESULTS

Seven patients were included. No study-related severe adverse events were reported. Imaging before surgery revealed previously undetected metastases in one patient. The mean(standard deviation, s.d.) SPECT/CT peritoneal cancer index score was 3(2), and the intraoperative score was 14(7) (P = 0.032). A total of 52 lesions were removed during CRS, of which 37 were malignant. With NIRF imaging, 34 (92%) of 37 malignant lesions were detectable. Of 52 fluorescent lesions, 4 were false-positive. Mean(s.d.) fluorescence TBR was 3.4(1.8) and mean radiodetection TBR was 4.4(1.4).

CONCLUSION

This study confirmed the safety and feasibility of multimodal image-guided surgery in patients with peritoneal metastases.

Machine learning for the rElapse risk eValuation in acute biliary pancreatitis: The deep learning MINERVA study protocol

BACKGROUND

Mild acute biliary pancreatitis (MABP) presents significant clinical and economic challenges due to its potential for relapse. Current guidelines advocate for early cholecystectomy (EC) during the same hospital admission to prevent recurrent acute pancreatitis (RAP). Despite these recommendations, implementation in clinical practice varies, highlighting the need for reliable and accessible predictive tools. The MINERVA study aims to develop and validate a machine learning (ML) model to predict the risk of RAP (at 30, 60, 90 days, and at 1-year) in MABP patients, enhancing decision-making processes.

METHODS

The MINERVA study will be conducted across multiple academic and community hospitals in Italy. Adult patients with a clinical diagnosis of MABP, in accordance with the revised Atlanta Criteria, who have not undergone EC during index admission will be included. Exclusion criteria encompass non-biliary aetiology, severe pancreatitis, and the inability to provide informed consent. The study involves both retrospective data from the MANCTRA-1 study and prospective data collection. Data will be captured using REDCap. The ML model will utilise convolutional neural networks (CNN) for feature extraction and risk prediction. The model includes the following steps: the spatial transformation of variables using kernel Principal Component Analysis (kPCA), the creation of 2D images from transformed data, the application of convolutional filters, max-pooling, flattening, and final risk prediction via a fully connected layer. Performance metrics such as accuracy, precision, recall, and area under the ROC curve (AUC) will be used to evaluate the model.

DISCUSSION

The MINERVA study aims to address the specific gap in predicting RAP risk in MABP patients by leveraging advanced ML techniques. By incorporating a wide range of clinical and demographic variables, the MINERVA score aims to provide a reliable, cost-effective, and accessible tool for healthcare professionals. The project emphasises the practical application of AI in clinical settings, potentially reducing the incidence of RAP and associated healthcare costs.

TRIAL REGISTRATION

ClinicalTrials.gov ID: NCT06124989.

A machine learning model utilizing CT radiomics features and peripheral blood inflammatory markers predicts the prognosis of patients with unresectable esophageal squamous cell carcinoma undergoing PD-1 inhibitor combined with concurrent chemoradiotherapy

Objective: To investigate the value of a machine learning model that integrates radiomics features and peripheral blood inflammatory markers in predicting the prognosis of patients with unresectable esophageal squamous cell carcinoma (ESCC) receiving PD-1 inhibitor combined with concurrent chemoradiotherapy. Methods: A retrospective collection was conducted involving 105 patients with unresectable ESSC who received PD-1 inhibitors combined with concurrent chemoradiotherapy at the First Affiliated Hospital of the University of Science and Technology of China from January 2020 to August 2023. These patients were randomly divided into a training set (n=74) and a validation set (n=31). Radiomics features were extracted from arterial phase CT images obtained before initial treatment, with feature selection performed using Pearson Correlation and LASSO-COX methods. Baseline clinical characteristics were analyzed, and hematological parameters were collected before the start of immunotherapy and within 4-6 weeks post-treatment to calculate inflammatory markers. Subsequently, independent radiomics features influencing patient prognosis were identified using a multivariate Cox proportional hazards model, and these features were incorporated into a clinical feature-based multivariate Cox model to derive independent prognostic factors combining radiomics and clinical characteristics. Nomograms were constructed to predict the 2-year progression-free survival (PFS) of patients based on the results of COX analysis involving clinical characteristics, radiomic features, and combined indicators. The models were evaluated and assessed using ROC curves and calibration curves. Results: In the training cohort, the AUC was 0.705 for the clinical model, 0.573 for the radiomics model, and 0.834 for the combined model. In the validation cohort, the AUC was 0.784 for the clinical model, 0.775 for the radiomics model, and 0.872 for the combined model. Conclusion: The combined model integrating the radiomic feature NGTDM-busyness, the inflammatory marker ΔNLR, and the clinical characteristic M stage offers the optimal predictive value for the 2-year PFS in patients.