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OBJECTIVE: To evaluate the usefulness of gasless reduced-port laparoscopic myomectomy (GRP-LM) using a subcutaneous abdominal wall lifting method. METHODS: In GRP-LM, after lifting the abdominal wall by a subcutaneous abdominal wall lifting method, a 1.5-cm incision is made in the lateral abdomen, Lap Protector® is placed. The operation is performed by two surgeons, one who inserts multiple forceps from the Lap Protector and performs the operation, and an assistant who operates the laparoscope and uterine manipulator. The surgical outcome of GRP-LM and the factors that affect it were investigated. RESULTS: GRP-LM was performed in 966 patients. Complications (0.5%) and blood transfusions (0.3%) were remarkably rare, and there were no cases of conversion to open surgery. With regard to the correlation between the number of fibroids extracted and each factor, the number of fibroids extracted correlated with fibroid weight and operation time, but not with blood loss. The average number of sutures per case was 21, and the average suture and ligation time per suture was 77 s. Comparing the cost of GRP-LM with that of the conventional insufflation LM, a saving of $875 was possible with GRP-LM. CONCLUSION: GRP-LM is a suitable for multiple fibroids, and is cosmetic and economical, because it allows rapid and reliable suture and ligation, despite having only one port for the procedure.

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Same-day discharge (SDD) after Laparoscopic Roux-En-Y Gastric Bypass (LRYGB) faces resistance due to possible undetected postoperative complications. These present with changes in vital signs, which continuous remote monitoring devices can detect. This study compared continuous vital signs monitoring using the Isansys Patient Status Engine™ with standard nursing vital signs measurements to assess the device's reliability in postoperative surveillance of patients undergoing LRYGB. We conducted a pilot study including patients who underwent LRYGB. During their hospital stay, patients were continuously monitored using the Isansys Patient Status Engine™ with Lifetouch™, Lifetemp™, and Nonin Pulse Oximeter™ sensors. The heart rate (HR), body temperature, and oxygen saturation (SpO2) collected by the device were compared with standard nursing assessments. Thirteen patients with a mean body mass index of 41.5 ± 4.4 kg/m2 were included. No major complications occurred. The median HR assessed by standard and continuous monitoring did not significantly differ (75.5 [69-88] vs. 77 [66-91] bpm, p = 0.995), nor did the mean values of SpO2 (94.7 ± 2.0 vs. 93.7 ± 1.8%, p = 0,057). A significant difference was observed in median body temperature between the nursing staff and the monitoring device (36.3 [36.1-36.7] vs. 36.1 [34.5-36.6] degrees Celsius, p = 0.012), with a tendency for lower temperature measurements by the device. In conclusion, this is the first study on continuous postoperative surveillance using the Isansys Patient Status Engine™ monitoring device for LRYGB patients. Our results introduce a novel tool for more efficient surgery. Prospective randomized experimental studies are warranted to evaluate this method's efficacy and safety.

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The purpose of this study is to evaluate whether the periprostatic adipose tissue thickness (PPATT) is an independent prognostic factor for prostate cancer patients after laparoscopic radical prostatectomy (LRP). This retrospective cohort study included consecutive prostate cancer patients who underwent LRP treatment at Wuhan Union Hospital from June 2, 2016, to September 7, 2023. PPATT was defined as the thickness of periprostatic fat and was obtained by measuring the shortest vertical distance from the pubic symphysis to the prostate on the midsagittal T2-weighted MR images. Subcutaneous adipose tissue thickness (SATT) was obtained by measuring the shortest vertical distance from the pubic symphysis to the skin at the same slice with PPATT. The primary outcome of the study was biochemical recurrence (BCR), and the secondary outcome was overall survival (OS). Multivariable Cox regression analysis was used to identify independent prognostic factors for prostate cancer survival and prognosis. Based on the optimal cutoff value, 162 patients were divided into a low PPATT/SATT group (n = 82) and a high PPATT/SATT group (n = 80). During the entire follow-up period (median 23.5 months), 26 patients in the high PPATT/SATT group experienced BCR (32.5%), compared to 18 in the low PPATT/SATT group (22.0%). Kaplan-Meier curve analysis indicated that the interval to BCR was significantly shorter in the high PPATT/SATT group (P = 0.037). Multivariable Cox regression analysis revealed that an increase in the PPATT/SATT ratio was associated with BCR (hazard ratio: 1.90, 95% CI, 1.03-3.51; P = 0.040). The PPATT/SATT ratio is a significant independent risk factor for BCR after LRP for prostate cancer patients.

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INTRODUCTION: Simulation training programs are essential for novice surgeons to acquire basic experience to master laparoscopic skills. However, current state-of-the-art laparoscopy simulators are still expensive, limiting the accessibility to practical training lessons. Furthermore, training is time intensive and requires extensive spatial capacity, limiting its availability to surgeons. New laparoscopic simulators offer a cost-effective alternative, which can be used to train in a digital environment, allowing flexible, digital and personalized laparoscopic training. This study investigates if training on low-cost simulators in a digital environment is comparable to in-person training formats. MATERIALS AND METHODS: From June 2023 to December 2023, 40 laparoscopic novices participated in this multi-center, prospective randomized controlled trial. All participants were randomized to either the ?distance" (intervention) or the "in-person" (control) group. They were trained in a standardized laparoscopic training curriculum to reach a predefined level of proficiency. After completing the curriculum, participants performed four different laparoscopic tasks on the ForceSense system. Primary endpoints were overall task errors, the overall time for completion of the tasks, and force parameters. RESULTS: In total, 40 laparoscopic novices completed digital or in-person training. Digital training showed no significant differences in developing basic laparoscopic skills compared to in-person training. There were no significant differences in median overall errors between both training groups for all exercises combined (intervention 3 vs. control 4; p value = 0.74). In contrast, the overall task completion time was significantly lower for the group trained digitally (intervention 827.92 s vs. control 993.42; p value = 0.015). The applied forces during the final assessment showed no significant differences between both groups for all exercises. Overall, over 90% of the participants rated the training as good or very good. CONCLUSION: Our study shows that students that underwent digital laparoscopic training completed tasks with a similar number of errors but in a shorter time than students that underwent in-person training. Nevertheless, the best strategies to implement such digital training options need to be evaluated further to support surgeons' personal preferences and expectations.

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BACKGROUND: Concurrent neoadjuvant chemo-radiation (nCRT) with total mesorectal excision (TME) alone sometimes fails to cure lateral lymph node metastasis (LLNM). Therefore, additional lateral lymph node dissection (LLND) can help in the treatment of these patients. This is what we refer to as extended total mesorectal excision (eTME). Such operations (TME alone or eTME) can be performed using conventional laparoscopic techniques and robotic-assisted techniques as well. Our meta-analysis aims to compare the results of robot-assisted (R-eTME) versus laparoscopic-assisted extended mesorectal excision (L-eTME) in terms of short- and long-term outcomes. METHODOLOGY: Databases searched using title and abstract included Medline (via PubMed), Web of Science, Scopus, and Embase, up to February 20, 2024. All studies that documented robotic versus laparoscopic procedures for extended total mesorectal excision (R-eTME versus L-eTME) and reported more than two relevant outcomes, were included in the study. RESULTS: Our meta-analysis demonstrates four significant outcomes (operative time, urinary complications, overall recurrence, and admission days) between the laparoscopic and robotic groups. The robotic approach shows advantages over the laparoscopic approach in these outcomes except for the operative time (minute), which was longer in the robotic group compared to the laparoscopic group. The laparoscopic group is associated with a higher overall recurrence than the robotic group with an Odds Ratio of 2(95% CI, 1-4, p = 0.05). CONCLUSION: This meta-analysis study showed that the R-eTME group had a lower recurrence rate compared to the L-eTME group. Additionally, hospital admission days increased significantly in the laparoscopic group. Other long-term outcomes did not differ significantly between the two groups. Short-term outcomes were similar, except for more urinary complications in the laparoscopic group. In conclusion, the study suggests that robotic surgery may offer advantages over laparoscopic surgery for eTME. Further research and analysis could provide further insight into the potential benefits of robotic surgery in this procedure, particularly when surgeon experience, center volume, and learning curve are taken into consideration.

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Introduction Surgeons-in-training (SIT) perform laparoscopic cholecystectomy (LC); however, it is challenging to complete the procedure safely in difficult cases. We present a surgical technique during difficult LC, which we named the hanging strap method. Methods We retrospectively compared the perioperative outcomes between patients undergoing difficult LC with the hanging strap method (HANGS, n = 34), and patients undergoing difficult LC without the hanging strap method (non-HANGS, n = 56) from 2022 and 2024. Difficult LC was defined as cases classified as more than grade II cholecystitis by the Tokyo Guidelines 18 and cases when LC was undergoing over five days after the onset of cholecystitis. Results The proportion of SIT with post-graduate year (PGY) ≤ 7 was significantly higher in the HANGS group than in the non-HANGS group (82.4% vs. 33.9%, P < 0.001). The overall rate of bile duct injury (BDI), postoperative bile leakage and operative mortality were zero in the whole cohort. There were no significant differences between the HANGS and non-HANGS groups in background characteristics, operative time (122 min vs. 132 min, P = 0.830) and surgical blood loss (14 mL vs. 24 mL, P = 0.533). Conclusions Our findings suggested that the hanging strap method is safe and easy to use for difficult LC. We recommend that the current method be selected as one of the surgical techniques for SIT when performing difficult LC.

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Inguinal bladder hernia is a rare clinical condition, and only a small number of reported cases have been treated by laparoscopic surgery. We report a case of a patient aged 65-year-old who presented to our outpatient care unit for a right inguinal swelling. Computer tomography (CT) imaging showed a direct inguinal hernia with bladder and epiploic content. We performed a laparoscopic transabdominal preperitoneal repair, which involved carefully reducing the bladder's protrusion from the hernial orifice. Subsequently, a mesh prosthesis was employed to treat the right inguinal hernia. This case represents an unusual instance of a successful laparoscopic repair for a right direct inguinal bladder hernia.

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Background: Single-incision plus one-port laparoscopic duodenum-preserving pancreatic head resection (SILDPPHR+1) is yet to be reported, and therefore, its safety and efficacy have yet to be established. This study aimed to assess the short-term efficacy of SILDPPHR+1 in comparison to conventional laparoscopic duodenum-preserving pancreatic head resection (cLDPPHR). Methods: Consecutive patients who underwent SILDPPHR+1 and cLDPPHR procedures were screened. An analysis of the intraoperative and postoperative data of all patients was carried out. Results: Nineteen patients who underwent SILDPPHR+1 and 24 patients who underwent cLDPPHR at Sichuan Provincial People's Hospital from October 15, 2021, to October 30, 2023, were enrolled in this study. All baseline parameters of both groups were comparable. There was a statistically significant difference in the cosmetic score between the groups (P<0.001). No statistically significant differences were observed between the two groups regarding postoperative recovery, postoperative pancreatic fistula (POPF), bile leakage rate, delayed gastric emptying (DGE) rate, postpancreatectomy hemorrhage (PPH) rate, abdominal infection rate, or textbook outcomes. Conclusions: SILDPPHR+1 appears to be a reliable and safe procedure for certain patients, with no increase in the operating time or complications, similar to the results of cLDPPHR. Moreover, SILDPPHR+1 offers the added advantage of superior cosmetic results.

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BACKGROUND: A sclerosing epithelioid fibrosarcoma (SEF) is a rare malignant fibroblastic soft tissue tumor that rarely occurs in intra-abdominal organs. A case of a SEF in the pancreatic head is reported herein, including its clinical manifestations, preoperative imaging features, gross specimen and pathological findings. CASE SUMMARY: A 33-year-old male patient was admitted to Peking Union Medical College Hospital in December 2023 due to a one-year history of intermittent upper abdominal pain and the discovery of a pancreatic mass. The patient underwent an enhanced computed tomography scan of the abdomen, which revealed a well-defined, round mass with clear borders and calcifications in the pancreatic head. The mass exhibited progressive, uneven mild enhancement, measuring approximately 6.6 cm × 6.3 cm. The patient underwent laparoscopic pylorus-preserving pancreaticoduodenectomy. Postoperative pathological examination revealed that the lesion was consistent with a SEF. At the 3-month postoperative follow-up, the patient did not report any short-term complications, and there were no signs of tumor recurrence. CONCLUSION: SEFs are rare malignant fibrous soft tissue tumors. SEFs rarely develop in the pancreas, and its preoperative diagnosis depends on imaging findings, with confirmation depending on pathological examination and immunohistochemistry. Currently, only four cases of pancreatic SEF have been reported in studies written in English. This case is the first reported case of a pancreatic SEF by a clinical physician.

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Background: As liver surgery continues to evolve, be it open, laparoscopic or robotic, it remains a procedure that can deteriorate in the blink of an eye. Liver surgery in patients with hepatoma is further complicated, as the vast majority have significant fibrosis, if not cirrhosis. Thus, parenchymal sparing resection is increasingly necessary. Effective and safe intracorporeal mobilization of the liver is essential for minimal access parenchymal-sparing and conventional resection. Methods: This retrospective review of over 150 cases performed provides a hands-on approach to laparoscopic hepatic mobilization with the use of an inexpensive technique using a 1" packing tape to "Sling" the liver in-order to divide the ligaments holding the liver in place and optimally position the liver for parenchymal transection. Results: Use of a 1" packing tape to "Sling" the liver intracorporeally is demonstrated to enable mobilization of the liver for tissue sparing non-anatomic, anatomic and major resections. Conclusion: Use of a 1" packing tape to "Sling" the liver intracorporeally can facilitate mobilization for resection. Surgeons hoping to master minimal access resection should also be well versed in the use of laparoscopic ultrasound and liver transplant "Piggyback" technique.

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BACKGROUND AND OBJECTIVES: Hartmann reversal (HR) is challenging and traditionally requires a large laparotomy wound. With the development of minimally invasive techniques, laparoscopic reversal of Hartmann's operation (HO) was attempted. We aimed to evaluate the outcomes of laparoscopic Hartmann reversal (LHR) versus open Hartmann reversal (OHR). MATERIALS AND METHODS: In this study, we included 33 patients who underwent HR at Chi Mei Medical Center between January 2015 and March 2023. Ten patients received LHR, while 23 received OHR. We compared patient demographics, perioperative outcomes, early postoperative complications, and late postoperative complications between the two groups. RESULTS: There was no significant difference in the baseline demographics of both groups. Compared to the open method, the LHR group had a shorter hospital stay and time to solid diet. The median length of hospital stay in the OHR and LHR groups was 15.00 (Q1-Q3: 13.00-16.00) and 11.5 (Q1-Q3: 10.00-14.00) days (p = 0.028), respectively. The median time to solid diet was 8.00 (Q1-Q3: 7.00-8.00) days in the OHR group and 5.00 (Q1-Q3: 5.00-7.00) days in the LHR group (p = 0.022). No statistical significance between the groups was noticed in early and late postoperative complications. CONCLUSIONS: Whether using a laparoscopic or an open method, HR is challenging. In our study, patients who underwent LHR were associated with reduced hospital stays and faster bowel movements.

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Pseudoachalasia is a known complication following a gastric band placement that is reversible with band removal. However, the development of a sigmoid esophagus is uncommon. Sigmoid esophagus is considered late-stage achalasia and is associated with worse outcomes with myotomy compared to earlier-stage achalasia. A 53-year-old male with a laparoscopic adjustable gastric band (LAGB) placed 15 years ago presented to the clinic with persistent dysphagia after the band was deflated for symptoms of dysphagia. The upper gastrointestinal series showed a 6.6-cm-diameter, tortuous, sigmoid-shaped esophagus. Esophagogastroduodenoscopy confirmed a diagnosis of sigmoid esophagus proven via the presence of inflamed mucosa, tortuous esophagus, and high lower esophagus sphincter pressure consistent with pseudoachalasia, all secondary to LAGB. The patient then underwent band removal, resulting in rapid resolution of his symptoms. The postoperative barium study showed improvement in dilatation. At the three-month postoperative follow-up, manometry demonstrated normal motility, indicating resolution of the pseudoachalasia and sigmoid esophagus. This case demonstrated band removal as an effective treatment option despite late-stage pseudoachalasia with a sigmoid esophagus.

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Robotic colectomy has been associated with comparable or improved short-term morbidity and mortality when compared to laparoscopic colectomy, including shorter length of stay. In this study, we sought to understand oncologic advantages for robotic as compared to laparoscopic colectomy in colon cancer. We analyzed the American College of Surgeons National Surgical Quality Improvement Program (NSQIP) participant user files for all elective colon cancer cases from 1/2016 through 12/2021 performed with minimally invasive surgical techniques (robotic and laparoscopic). We calculated relative risks (RR) through Poisson Regression models and treatment effect coefficients by propensity-score match, after adjusting for age, BMI, ASA scores, mechanical and antibiotic bowel preparation, emergency surgery, race, gender, smoking status, hypertension and diabetes mellitus. Analyzed outcomes included rate of chemotherapy initiation within 90 days of surgery, number of harvested lymph nodes, any occurrence of intraoperative or postoperative blood transfusion, and the need for ostomy. During the study period, 44,745 patients underwent minimally invasive colectomy for colon cancer; 39,614 in the laparoscopic cohort and 7,831 in the robotic cohort. After adjusting for confounders, robotic colectomy was associated with a significant increase in the likelihood for initating chemotherapy within 90 days (RR 1.98, 95% CI {1.86-2.10}, p < 0.001). The robotic-treated patients had a significantly more lymph nodes harvested, a significant decrease in the need for intraperative or postoperative blood transfusion (RR 0.64, 95% CI {0.57-0.71}, p < 0.001) and a significant reduction in the need for ostomy formation (RR 0.26, 95% CI {0.22-0.30}, p < 0.001). As a retrospective and non-randomized study, residual bias and confouding variables are likely to exist. The study is also subject to coding incompleteness and inaccuracies. We also do not have additional context on potential factors that might influence time to chemotherapy. In addition, there is no information on surgeon or hospital volume, which can be associated with outcomes. Robotic colectomy for colon cancer was associated with significant improvement in the rate of chemotherapy initiation within 90 days, a significant reduction in need for blood transfusions, and a lower likelihood of receiving an ostomy when compared to laparoscopic colectomy procedures. The data reveal substantial short-term gains in oncologic outcomes for colon cancer performed with robotic techniques.

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INTRODUCTION: Given the increasing interest for surgeons to reclaim the common bile duct in managing choledocholithiasis, there is a growing movement to perform common bile duct exploration (CBDE). Advantages of concomitant CBDE with cholecystectomy include fewer anesthetic events and decreased length of stay. As there is a paucity of literature evaluating the use of the robotic platform for CBDE, our study aims to compare intraoperative and post-operative outcomes between robotic-assisted one-stage and two-stage management of choledocholithiasis. METHODS: A retrospective chart review was performed from May 1, 2022 to December 31, 2023, identifying patients with choledocholithiasis who underwent robot-assisted laparoscopic cholecystectomy and transcystic CBDE with choledochoscopy (one-stage management). Preoperative, intraoperative, and post-operative variables were compared to a control group of subjects with choledocholithiasis who underwent laparoscopic cholecystectomy with pre- or post-operative ERCP (two-stage management). Statistical analysis was performed using Chi-squared, Fisher's exact, Student's T, or Mann-Whitney test. RESULTS: Fifty-three subjects who underwent one-stage management and 101 subjects who underwent two-stage management met inclusion criteria. Groups had similar demographics and medical history. Time to CBD clearance (45.2 h vs 47.0 h, p = .036), total length of stay (3.9 days vs 5.1 days, p = .007), fluoroscopy time (70.3 s vs 151.4 s, p < .001), and estimated radiation dose (23.0 mSv vs 40.3 mSv, p = .002) were significantly lower in the one-stage group compared to two-stage. Clearance rates, complication rates, and 30-day readmission rates were similar for both groups. Total length of stay and radiation exposure remained significantly lower on subanalysis comparing one-stage management to two-stage management with ERCP either before or after cholecystectomy. CONCLUSION: Robotic-assisted laparoscopic cholecystectomy with transcystic common bile duct exploration via choledochoscopy is a safe and feasible option in the management of choledocholithiasis. It offers a shorter time to duct clearance, shorter length of stay, and less radiation exposure when compared to two-stage management.

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INTRODUCTION: Inguinal hernia repair (IHR) is one of the most common procedures in pediatric surgery. In children, the application of robotic surgery is limited, meaning safety and efficacy is still to be assessed. This report is the first one worldwide that describes inguinal hernia repair in children using the Senhance® Surgical System (SSS®). The aim of this matched cohort study is to assess safety and feasibility of robot-assisted IHR (RIHR) in children, compared to conventional laparoscopic IHR (LIHR). PATIENTS AND METHODS: This pilot study included 26 consecutive patients between 3 months and 8 years old who underwent RIHR (31 IH's) with the SSS® between 2020 and 2024. These cases were matched based on gender, age, and unilateral or bilateral IH, with 26 patients (32 IH's) who underwent conventional LIHR. RESULTS: There was a significant difference in total anesthesia time, which is most likely due to the extra time needed to dock the robot in the RIHR cases. No significant difference was seen in surgical time. One recurrence (3.2%) was diagnosed in both groups. One patient in the LIHR group was readmitted on the day of discharge due to a hemorrhage. No intervention was necessary, and the patient was discharged 1 day later. DISCUSSION: In this pilot study, the use of the robotic system was safe and feasible. More experience, further improvement of the system for use in very small children, and investigation in a larger sample size with long-term follow-up is necessary to evaluate efficacy.

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Background: Sleeve gastrectomy is the most common bariatric procedure worldwide, yet postoperative pain management remains a concern. This study aimed to compare pain medication usage and pain scores between laparoscopic sleeve gastrectomy (LSG) and robotic sleeve gastrectomy (RSG) patients, addressing the potential benefits of RSG in postoperative pain control. Methods: A retrospective review of our institutional bariatric surgery registry included 484 patients (435 LSG, 49 RSG) who underwent surgery between September 2015 and November 2020. Pain management medications, including opioid use converted to morphine milligram equivalents (MMEs), and Numerical Rating Scale (NRS) scores were analyzed postoperatively using mixed-effects models. Results: RSG patients reported lower pain scores in the initial 24 h post-surgery and received significantly lower doses of morphine equivalents compared to LSG patients (median 7.5 mg vs. 12.5 mg, p < 0.001). RSG procedures had longer operative times (122.5 ± 27.1 vs. 89.9 ± 30.5 min, p < 0.001) but a shorter average length of stay (2.24 ± 0.60 vs. 2.65 ± 1.49 days) compared to LSG. Conclusions: These findings suggest that RSG may lead to reduced immediate postoperative pain and lower opioid requirements compared to the laparoscopic approach, despite longer operative times. Further randomized controlled trials are needed to confirm these observations and evaluate long-term outcomes.

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BACKGROUND: This study aimed to investigate factors associated with prolonged operative time in laparoscopic right hemicolectomy for colon cancer. METHODS: This was a retrospective review of patients with colon cancer who underwent laparoscopic right hemicolectomy between 2011 and 2021. Linear and binary logistic regression analyses were performed to determine factors associated with prolonged operative time. The association between longer operative times and complications and hospital stay was assessed. RESULTS: One hundred and ninety-seven patients (52.3% female; mean age: 68.8 ± 14.1 years) were included. Factors independently associated with operative time were male sex (ß = 17.3, 95% CI: 2, 32.5; p = 0.026) and extended hemicolectomy (ß = 67.7, 95% CI: 27.6, 107.9; p = 0.001). American Society of Anesthesiologists (ASA) IV classification had a borderline significant association with operative time (ß = 100.4, 95% CI: -2.05, 202.9; p = 0.055). Male sex (r = 0.158; p = 0.026), body mass index (r = 0.205; p = 0.004), ASA classification (r = 0.232; p = 0.001), extended hemicolectomy (r = 0.256; p < 0.001), and intracorporeal vessel control (r = 0.161; p = 0.025) had significant positive correlation with operative times. Patients with operative times ≥ 160 min had significantly longer hospital stays (5 vs. 4 days; p = 0.043) and similar complication rates to patients with shorter operative times. CONCLUSIONS: Male sex, advanced ASA classification, and extended hemicolectomy were independently and significantly associated with longer operative times in laparoscopic right hemicolectomy. Longer operative times were associated with longer hospital stays and similar complication rates.

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BACKGROUND: Postoperative pulmonary complications (PPCs) contribute to high mortality rates and impose significant financial burdens. In this study, a machine learning-based prediction model was developed to identify patients at high risk of developing PPCs following laparoscopic hepatectomy. METHODS: Data were collected from 1022 adult patients who underwent laparoscopic hepatectomy at two centres between January 2015 and February 2022. The dataset was divided into a development set and a temporal external validation set based on the year of surgery. A total of 42 factors were extracted for pre-modelling, including the implementation status of Enhanced Recovery after Surgery (ERAS). Feature selection was performed using the least absolute shrinkage and selection operator (LASSO) method. Model performance was assessed using the area under the receiver operating characteristic curve (AUC). The model with the best performance was externally validated using temporal data. RESULTS: The incidence of PPCs was 8.7%. Lambda.1se was selected as the optimal lambda for LASSO feature selection. For implementation of ERAS, serum gamma-glutamyl transferase levels, malignant tumour presence, total bilirubin levels, and age-adjusted Charleston Comorbidities Index were the selected factors. Seven models were developed. Among them, logistic regression demonstrated the best performance, with an AUC of 0.745 in the internal validation set and 0.680 in the temporal external validation set. CONCLUSIONS: Based on the most recent definition, a machine learning model was employed to predict the risk of PPCs following laparoscopic hepatectomy. Logistic regression was identified as the best-performing model. ERAS implementation was associated with a reduction in the number of PPCs.

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BACKGROUND AND OBJECTIVE: Robotic adrenalectomy (RA) has attracted interest as an alternative to laparoscopic adrenalectomy (LA) for patients with pheochromocytoma, although its beneficial effects are uncertain. Our aim was to compare RA and LA outcomes for these patients. METHODS: Data for patients who underwent RA or LA for pheochromocytoma in 46 international centers between 2012 and 2022 were reviewed. We analyzed baseline characteristics and postoperative complications at discharge, 90 d, and 1 yr. We conducted propensity score matching (PSM; 1:1 ratio) and multivariable analyses to evaluate outcomes and risk factors for the occurrence of complications and higher Comprehensive Complication Index (CCI). KEY FINDINGS AND LIMITATIONS: Of 1755 patients, 1613 (91.9%) underwent LA and 142 (8.1%) underwent RA. Estimated blood loss, conversion rate, complication rate, and CCI at discharge, 90 d, and 1 yr were similar between the groups. However, RA was associated with a longer operative time in comparison to LA (100 vs 123 min; p < 0.001), but not after PSM (p = 0.120). Multivariable analysis revealed that Charlson comorbidity index (odds ratio [OR] 1.17, 95% confidence interval [CI] 1.07-1.29; p = 0.001), and tumor size per 1-cm increment (OR 1.13, 95% CI 1.07-1.21; p < 0.001) were independently associated with the incidence of complications, but there was no significant difference in complication rates between the LA and RA groups (OR 1.09, 95% CI 0.63-1.87; p = 0.767). After PSM, RA was associated with a lower rate of severe (grade ≥3a) complications in comparison to LA (p = 0.023). CONCLUSIONS AND CLINICAL IMPLICATIONS: RA is a safe alternative to LA and yields similar outcomes for patients with pheochromocytoma. RA may be associated with a lower likelihood of severe complications. Further studies are warranted to determine the role of robotic surgery in pheochromocytoma. PATIENT SUMMARY: Pheochromocytoma is a rare tumor in the adrenal gland and the gold-standard treatment is surgical removal. We assessed patient outcomes after robot-assisted surgery compared with laparoscopic surgery and found that outcomes are similar, but the rate of severe complications may be lower if a surgical robot is used.

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BACKGROUND: Benign uretero-ileal anastomotic stricture (UIAS) is a potentially serious complication that can arise after radical cystectomy (RC) and subsequent urinary diversion. To preserve residual renal function and improve prognosis, it is crucial to derive insights from experience and tailor individualized treatment strategies for different patients. PATIENTS AND METHODS: From October 2014 to June 2021, a total of 47 patients with benign UIAS underwent endoscopic management (n = 19) or reimplantation surgery (n = 28). The basic data, perioperative conditions, and postoperative outcomes of the two groups were compared and analyzed to evaluate efficacy. RESULTS: Comparing preoperative and postoperative clinical efficacy within the same group, the endoscopic group showed no significant differences in creatinine and blood urea nitrogen (BUN) levels before surgery or after extubation (p > 0.05). However, significant differences were observed in glomerular filtration rate (GFR) levels on the affected side before surgery and after extubation (p < 0.05). In contrast, the laparoscopic reimplantation group did not exhibit significant differences in creatinine, BUN, or GFR levels of affected side before surgery and after extubation (p > 0.05). Postoperative clinical efficacy showed no significant difference in creatinine and BUN levels between the two groups (p > 0.05). However, GFR values of affected side in the endoscopic treatment group decreased more than those in the laparoscopic reimplantation group (p < 0.05). Additionally, the laparoscopic reimplantation group was able to remove the single-J tube earlier than the endoscopic treatment group (p < 0.05), had a lower recurrence rate of hydronephrosis after extubation (p < 0.05), and experienced a later onset of hydronephrosis compared to the endoscopic treatment group (p < 0.05). CONCLUSIONS: Based on our experience in treating UIAS following RC combined with urinary diversion, laparoscopic reimplantation effectively addresses the issue of UIAS, allowing for the removal of the ureteral stent relatively soon after surgery. This approach maintains long-term ureteral patency, preserves residual renal function, reduces the risk of ureteral restenosis and hydronephrosis, and has demonstrated superior therapeutic outcomes in this study.

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