Minimally Invasive Surgery Group Research Articles

Robotic Versus Laparoscopic Versus Open Surgery for Non-Metastatic Pancreatic Neuroendocrine Tumors (pNETs): A Systematic Review and Network Meta-Analysis

Background: This systematic review, using pairwise and network meta-analyses, aimed to compare the intraoperative, short-term, and long-term postoperative outcomes of minimally invasive surgery (MIS) and open surgery (OS) for the management of pancreatic neuroendocrine tumors (pNETs). Methods: Studies reporting on the effects of robotic, laparoscopic, and open surgery on pNETs published before November 2023 on PubMed, Scopus, and CENTRAL were analyzed. Results: Thirty-two studies with 5379 patients were included in this review, encompassing 2251 patients undergoing MIS (1334 laparoscopic, 508 robotic, and 409 unspecified MIS) and 3128 patients undergoing OS for pNETs management. Pairwise meta-analysis revealed that the MIS group had a significantly shorter length of hospital stay ((a low certainty of evidence), MD of −4.87 (−6.19 to −3.56)); less intraoperative blood loss ((a low certainty of evidence), MD of −108.47 (−177.47 to −39.47)); and decreased tumor recurrence ((a high certainty of evidence), RR of 0.46, 95% CI (0.33 to 0.63)). Subgroup analysis indicated a higher R0 resection rate and prolonged operative time for laparoscopic surgery than for OS. The network meta-analysis ranked the robotic approach as superior in terms of the length of hospital stay, followed by the laparoscopic and OS arms. Furthermore, it favored both MIS approaches over OS in terms of the R0 resection rate. No significant differences were found in severe postoperative complications, postoperative fistula formation, mortality, readmission, reoperation, or conversion rates. Conclusions: This review supports the safety of MIS for the treatment of pNETs. However, the varying certainty of evidence emphasizes the need for higher-quality studies.

Long Term Outcomes of Pain, Disability and Quality of Life in Open vs Minimally Invasive Surgery of Transforaminal Lumbar Interbody Fusion

Objective: This study aims to evaluate the short- and long-term outcomes—specifically in terms of pain, disability, and quality of life—between minimally invasive surgery (MIS) and open transforaminal lumbar interbody fusion (TLIF) for treating lumbar spondylolisthesis. Study Design and Setting: A prospective cohort study was carried out at Liaquat National Hospital & Medical College, Karachi, and a teaching institution in South Asia. The study included patients with chronic back pain for over three months, unresponsive to medical treatment or accompanied by radicular symptoms, with MRI-confirmed grade I and II degenerative lumbar spondylolisthesis, lateral recess stenosis, and unilateral disc herniation. Patients with spinal metastasis, previous surgeries, inflammatory arthritis, or metabolic bone diseases were excluded. Methodology: The outcomes of MIS-TLIF and open-TLIF were assessed using the Visual Analog Scale (VAS), Oswestry Disability Index (ODI), and SF-36 quality of life scores at 1, 6, and 24 months postoperatively. Results: Among 93 patients, 35 underwent open-TLIF and 58 received MIS-TLIF. MIS-TLIF resulted in significantly less blood loss and faster recovery. At four weeks, the MIS group had lower VAS and ODI scores, and higher SF-36 scores. Similar trends continued at six months, with improvements in ODI and SF-36. By 24 months, the MIS group maintained lower ODI scores, though VAS and SF-36 scores were comparable. Conclusion: MIS-TLIF shows superior outcomes, especially in the early postoperative phase, with reduced morbidity and improved quality of life, making it a preferable option in resource-limited settings.

Outcome Measures of Open versus Minimally Invasive Surgery for Thoracolumbar Spinal Traumatic Fractures: A Systematic Review and Meta-Analysis.

Objective: To evaluate the efficacy of open and percutaneous pedicle screw fixation in the treatment of thoracolumbar fractures. Methods: Online databases MEDLINE (PubMed), SCOPUS, and Cochrane were searched for English language articles published between January 2001 and December 2023, limited to articles that included the clinical and radiological outcomes of adult patients. The main outcome measures of the study were the Oswestry Disability Index (ODI), the Numeric Rating Scale (NRS) score, and the Cobb angle. Results: A total of 7 studies involving 909 patients were included; 374 (41.1%) procedures were performed with open surgery (OS), while 535 (58.9%) procedures were conducted with minimally invasive surgery (MIS). The mean value of ODI in the MIS group was 8.29% [CI 95% 4.82-11.76], compared to the other group, which was 14.22% (p-value 0.87). Patients receiving a MIS had an average NRS of 1.54 [CI95% 0.98-2.10] whilst OS had 2.31 [CI95% 1.50-3.12] (p-value 0.12). Conclusions: The percutaneous technique is equally safe and effective in resolving the deformity, but the clear advantages are represented by the reduction in blood loss, shorter operative times, a lower incidence of infection, shorter hospitalization, shorter postoperative rehabilitation, and therefore good results in terms of quality of life.

Minimally Invasive Surgery: Is It a Risk Factor for Postoperative Peritoneal Metastasis in pT4 Colon Cancer?

Performing laparoscopic surgery for T4 colon cancer remains controversial because of concerns about whether its oncologic outcomes are comparable to those of open surgery, and postoperative peritoneal metastasis (PM) has been reported to occur more frequently in laparoscopic colectomy for T4 colon cancer. We investigated whether minimally invasive surgery (MIS) demonstrated a higher PM rate than open surgery and analyzed the risk factors for PM in pT4 colon cancer. This study included 392 patients with pT4 colon cancer who underwent curative surgery at a referral hospital between January 2000 and December 2018. Patients with previous neoadjuvant therapy, synchronous malignancy, metastasis, or those who underwent hyperthermic intraperitoneal chemotherapy were excluded. The MIS group had fewer high-risk clinical features, such as tumors too large for endoscope admission or complications like perforation and fistula. The group also exhibited shorter operative time, intraoperative blood loss, multivisceral resection, hospital stay, fewer postoperative complications, smaller tumor size, lower pT4b ratio, and higher pN+ rates. Multivariate analysis revealed that high-risk clinical features, MIS, pT4b, pN+, tumor size < 5 cm, high histological grade, lymphovascular invasion, and postoperative complications were significant risk factors for PM. During the median 59-month follow-up, the 5-year cumulative incidence of PM was elevated in the MIS group (17.5% vs. 8.2%; P = 0.057). No significant differences were observed in the 5-year overall and disease-free survival rates. Minimally invasive surgery increases the risk of postoperative PM in patients with pT4 colon cancer. Surgeons may require thorough tumor staging and radical resection to prevent PM.

Assessment of mechanical bowel preparation prior to nephrectomy in the minimally invasive surgery era: insights from a national database analysis in the United States.

This study was performed to evaluate the association between mechanical bowel preparation (MBP) and perioperative outcomes following nephrectomy in the minimally invasive surgery (MIS) era. All partial and radical nephrectomies between 2019 and 2021 from the National Surgical Quality Improvement Program database were evaluated. Thirty-day perioperative outcomes were compared between groups where MBP was performed vs. not, in both the MIS and open surgery (OS) cohorts. A propensity score matching technique was utilized within MIS cases to control for covariates. The chi-square and t tests were used to determine significance. A total of 11,869 cases met the inclusion criteria and were included in the analysis. Of these, 8,204 (69.1%; comprising 65.3% robotic and 34.7% laparoscopic) underwent MIS, while 3,655 (30.9%) underwent OS. The rate of MBP was higher in the MIS group (16.0% vs. 10.0%, p < 0.001). Within the MIS group, MBP was associated with reduced rates of postoperative ileus (0.9% vs. 1.9%, p = 0.02), while other complications were comparable. Propensity score matching showed no association between MBP and postoperative ileus. However, a lower rate of 30-day readmission in the MBP group became statistically significant (4.4% vs. 6.4%, p = 0.01). Conversely, patients in the MBP group also demonstrated higher rates of pneumonia (1.29% vs. 0.46%, p = 0.002) and pulmonary embolism (0.6% vs. 0%, p < 0.001) after matching. MBP practice prior to nephrectomy is infrequent in both OS and MIS cases, with minor differences in perioperative outcomes for patients undergoing MIS. Routine MBP should continue to be excluded from the standard of care for nephrectomy in the MIS era.

Oncological outcomes of minimally invasive surgery in non-endometrioid endometrial Cancer patients with varying prognostic risks: a retrospective cohort study based on the ESGO/ESTRO/ESP 2020 guidelines

BackgroundNon-endometrioid endometrial carcinomas (NEEC) are characterized by their rarity and adverse prognoses. This study evaluates the outcomes of open versus minimally invasive surgery (MIS) in NEEC patients stratified by prognostic risks according to the 2020 ESGO-ESTRO-ESP risk classification guidelines.MethodsA retrospective analysis was performed on 99 NEEC patients who underwent initial surgery at Fujian University Cancer Hospital. Patients were categorized into two groups: those undergoing MIS and those undergoing open surgery. We compared disease-free survival (DFS) and overall survival (OS) between these groups. Cox regression analysis was employed to identify risk factors for DFS, which were further validated via bootstrap statistical methods.ResultsThe study included 31 patients in the MIS group and 68 in the open surgery group. The demographics and clinical characteristics such as age, body mass index, comorbidities, histological subtypes, and FIGO stage were similar between groups (P > 0.05). The MIS group experienced ten recurrences (1 vaginal, 2 lymph nodes, 7 distant metastases), whereas the open surgery group had seven recurrences (1 vaginal, 3 lymph nodes, 1 pelvis, 2 distant metastases), yielding recurrence rates of 10.3% versus 25.6% (P = 0.007). Besides lymphovascular space invasion (LVSI), surgical approach was also identified as an independent prognostic factor for DFS in high-risk patients (P = 0.037, 95% CI: 1.062–7.409). The constructed nomogram demonstrated a robust predictive capability with an area under the curve (AUC) of 0.767. Survival analysis for high- and intermediate-risk patients showed no significant differences in OS between the two groups (Phigh risk = 0.275; Pintermediate−risk = 0.201). However, high-risk patients in the MIS group exhibited significantly worse DFS (P = 0.001).ConclusionThis investigation is the inaugural study to assess the impact of surgical approaches on NEEC patients within the framework of the latest ESGO-ESTRO-ESP risk classifications. Although MIS may offer clinical advantages, it should be approached with caution in high-risk NEEC patients due to associated poorer DFS outcomes.

Efficacy study of neuronavigation-assisted stereotactic drilling of urokinase drainage versus craniotomy in the treatment of massive intracerebral haemorrhage in elderly patientsa

To evaluate the efficacy of neuronavigation-assisted stereotactic drilling drainage compared with that of craniotomy in the treatment of massive intracerebral haemorrhage (ICH) in elderly patients. This was a randomized, controlled, blind endpoint clinical study. Elderly patients with massive ICH treated at our neurosurgery department, without the formation of brain herniation preoperatively, all underwent neurosurgical intervention. Patients were randomly assigned to two groups: the minimally invasive surgery (MIS) group, which received neuronavigation-assisted stereotactic drilling drainage, and the craniotomy haematoma removal surgery (CHRS) group. Patient characteristics, surgical anaesthesia methods, surgery duration, intraoperative bleeding volume, duration of ICU stay duration of hospital stay, complications, and modified Rankin scale (mRS) scores at 90 days posttreatment were compared between the two groups. Statistical analysis was performed on the collected data. A total of 67 patients were randomly assigned, with 33 (49.25%) in the MIS group and 34 (50.75%) in the CHRS group. Compared with the CHRS group, the MIS group had advantages, including the use of local anaesthesia, shorter surgery duration, less intraoperative bleeding, shorter ICU stay, and fewer complications (P < 0.05). The MIS group had a significantly improved patient prognosis at 90 days (mRS 0–3). However, there were no significant differences in hospital stay or 90-day survival rate between the two groups (P > 0.05). For elderly patients with massive ICH without brain herniation, stereotactic drilling drainage is a simple surgical procedure that can be performed under local anaesthesia. Patients treated with this approach seem to have better outcomes than those treated with craniotomy. In clinical practice, neuronavigation-assisted stereotactic drilling drainage is recommended for surgical treatment in elderly patients with massive ICH without brain herniation.Clinical trial registration number: NCT04686877

Traditional craniotomy versus current minimally invasive surgery for spontaneous supratentorial intracerebral haemorrhage: A propensity-matched analysis.

Minimally invasive surgery (MIS) and craniotomy (CI) are the current treatments for spontaneous supratentorial cerebral haemorrhage (SSTICH). To compare the efficacy and safety of MIS and CI for the treatment of SSTICH. Clinical and imaging data of 557 consecutive patients with SSTICH who underwent MIS or CI between January 2017 and December 2022 were retrospectively analysed. The patients were divided into two subgroups: The MIS group and CI group. Propensity score matching was performed to minimise case selection bias. The primary outcome was a dichotomous prognostic (favourable or unfavourable) outcome based on the modified Rankin Scale (mRS) score at 3 months; an mRS score of 0-2 was considered favourable. In both conventional statistical and binary logistic regression analyses, the MIS group had a better outcome. The outcome of propensity score matching was unexpected (odds ratio: 0.582; 95%CI: 0.281-1.204; P = 0.144), which indicated that, after excluding the interference of each confounder, different surgical modalities were more effective, and there was no significant difference in their prognosis. Deciding between MIS and CI should be made based on the individual patient, considering the hematoma size, degree of midline shift, cerebral swelling, and preoperative Glasgow Coma Scale score.

Approach to radical hysterectomy for cervical cancer after the LACC trial and associated complications: a NSQIP study

BackgroundThe Laparoscopic Approach to Cervical Cancer (LACC) study results revolutionized our understanding of the best surgical management for this disease. Following its publication, guidelines state that the standard and recommended approach for radical hysterectomy is with an open abdominal approach. Nevertheless, the impact of the LACC trial on real-world changes in the surgical approach to radical hysterectomy remains elusive. ObjectiveWe aimed to study the trends and routes of radical hysterectomies and to evaluate post-operative complication rates before and after the LACC trial (2018). Study DesignThe National Surgical Quality Improvement Program registry was used to examine radical hysterectomies performed for cervical cancer between 2012-2022. We excluded vaginal radical hysterectomies and simple hysterectomies. The primary outcome measures were the trends in route of surgery [minimally invasive surgery (MIS) vs. laparotomy] and surgical complications rate, stratified by periods before and after the publication of the LACC trial in 2018 (2012-2017 vs. 2019-2022). The secondary outcome measure was major complications associated specifically with the different routes of surgery. ResultsOf the 3,611 patients included, 2,080 (57.6%) underwent laparotomy and 1,531 (42.4%) underwent MIS radical hysterectomy. There was a significant increase in the MIS approach from 2012 to 2017 (45.6% MIS in 2012 to 75.3% MIS in 2017, p<.001), and a significant decrease in MIS from 2018 to 2022 (50.4% MIS in 2018 to 11.4% MIS in 2022, p<.001).The rate of minor complications was lower in the period before the LACC trial [317 (16.9%) vs. 288 (21.3%), p=.002]. Major complications rate was similar before and after the LACC trial [139 (7.4%) vs. 78 (5.8%), p=.26]. The rates of blood transfusions and superficial surgical site infections were lower in the period before the LACC trial [137 (7.3%) vs. 133 (9.8%), p=.012 and 20 (1.1%) vs. 53 (3.9%), p<.001, respectively]. In a comparison of MIS vs. laparotomy radical hysterectomy during the entire study period, patients in the MIS group had lower rates of minor complications [190 (12.4%) vs. 472 (22.7%), p<.001] and the rate of major complications was similar in both groups [100 (6.5%) in the MIS group vs. 139 (6.7%) in the laparotomy group, p=.89]. In a specific complications analysis, the rates of blood transfusion and superficial surgical site infections were lower in the MIS groups (2.4% vs. 12.7%, and 0.6% vs. 3.4%, p<.001 for both comparisons) and the rate of deep incisional surgical site infections was lower in the MIS group (0.2% vs. 0.7%, p=.048). In a multiple logistic regression analysis, the route of radical hysterectomy was not independently associated with occurrence of major complications [aOR 95% CI 1.02 (0.63-1.65)]. ConclusionWhile the proportion of MIS radical hysterectomy decreased abruptly following the LACC trial, there was no change in the rate of major post-operative complications. In addition, hysterectomy route was not associated with major post-operative complications.

Laparoscopic versus open liver resection for colorectal liver metastasis: an umbrella review.

This study comprehensively compared laparoscopic liver resection (LLR) to open liver resection (OLR) in treating colorectal cancer liver metastasis (CRLM). A systematic review of relevant literature was conducted to assess a range of crucial surgical and oncological outcomes. Findings indicate that minimally invasive surgery (MIS) did not significantly prolong the duration of surgery compared to open liver resection and notably demonstrated lower blood transfusion rates and reduced intraoperative blood loss. While some studies favored MIS for its lower complication rates, others did not establish a statistically significant difference. One study identified a lower post-operative mortality rate in the MIS group. Furthermore, MIS consistently correlated with shorter hospital stays, indicative of expedited post-operative recovery. Concerning oncological outcomes, while certain meta-analyses reported a lower rate of cancer recurrence in the MIS group, others found no significant disparity. Overall survival and disease-free survival remained comparable between the MIS and open liver resection groups. The analysis emphasizes the potential advantages of LLR in terms of surgical outcomes and aligns with existing literature findings in this field. [website], identifier [registration number].

Feasibility of laparoscopic/robot-assisted surgery for Borrmann type 4 gastric cancer: a comparison study with conventional open surgery.

Laparoscopic surgery for early gastric cancer is regarded as a standard of care because of robust evidences obtained by several phase-III trials. Furthermore, the efficacy of laparoscopic radical surgery for advanced gastric cancer has been also reported. Meanwhile, the feasibility of laparoscopic surgery for Bormann type 4 gastric cancer, special type with unfavorable prognosis, remains unclear since excluded from eligibility of these trials. This study included 100 patients with type 4 gastric cancer who underwent laparoscopic/robot-assisted (minimally invasive surgery (MIS) group; n = 32) or open (Open group; n = 68) curative surgery between 2008 and 2021. After propensity score matching, 30 patients in each group were extracted for analysis. Clinical data, including surgical and midterm survival outcomes, were retrospectively compared between the two groups. Incidences of postoperative complication (≥ Clavien-Dindo grade III) were recorded in 23.3% in the MIS group and 13.3% in the Open group, but no statistical significance was demonstrated (P = 0.50). The 3-year overall survival rate in the MIS group was better than that in the Open group (80.2% vs. 53.5%, log-rank, P = 0.03). The trend of recurrence site was similar. Multivariate analysis showed that adjuvant chemotherapy was an independent favorable prognostic factor (hazard ratio, 0.33, 95% confidence interval 0.11-0.93) for overall survival. MIS was indicated as a favorable prognostic factor (hazard ratio, 0.39, 95% confidence interval 0.39-1.07), but without statistical difference. While multidisciplinary treatment is mainstay of treatment because of the poor prognosis of this disease, minimally invasive surgery may play an important role in treatment if appropriate patient selection is done. Further analyses with larger sample size are necessary to reach a final conclusion regarding oncological efficacy.

Comparison of Open Surgery Versus Minimally Invasive Surgery in Nonsevere Adult Degenerative Scoliosis: A Systematic Review and Meta-Analysis.

A systematic review and meta-analysis. This study aimed to evaluate the clinical efficacy of minimally invasive surgery (MIS) and open surgery in correcting ADS. Adult degenerative scoliosis (ADS) is a scoliosis secondary to degenerative changes in the intervertebral discs and facet joints in adults. Severe low back pain, radicular pain, and intermittent claudication are often present and require surgical treatment. PubMed, Embase, The Cochrane Library, China National Knowledge Infrastructure (CNKI) Database, Wanfang Data, Weipu Database, and China Biomedical Document Service System (CBM) were systematically searched for studies that focused on the clinical efficacy of minimally invasive surgery and open surgery to correct ADS. This meta-analysis included 11 studies, involving 1527 patients (581 in the MIS group and 946 in the open surgery group). Regarding surgery and outcome indicators, the operative time in the open surgery group was shorter, the MIS group had less intraoperative blood loss, shorter hospitalization time, and lower incidence of serious postoperative complications. In terms of imaging parameters, although there was no significant difference in Cobb angle improvement and sagittal balance, the open surgery group exhibited better lumbar lordosis improvement and pelvic tilt improvement. In terms of clinical scores, including changes in the ODI index and VAS scores for low back and leg pain, similar improvements were appreciated across both groups. In mild to moderate ADS, we found that the advantages of open surgery include greater improvement in lumbar lordosis and pelvic tilt angle and shorter operative time. The advantages of minimally invasive surgery are less intraoperative blood loss, shorter hospital stay, and fewer serious postoperative complications. There is no significant difference between the 2 surgical methods in terms of Cobb angle, clinical pain, and sagittal vertical axis improvement.

Minimally Invasive vs Open Approach for First Metatarsophalangeal Joint Arthrodesis: Short Report of Early Results.

We aim to compare early surgical results between groups who underwent minimally invasive surgery (MIS) vs open first metatarsophalangeal (MTP) arthrodesis to treat end-stage hallux rigidus. We conducted a retrospective cohort review of 65 patients who underwent a first MTP fusion procedure at an academic medical center between 2015 and 2023. Success of fusion was determined radiographically. Postoperative complications were identified through medical record review. Sixty-seven first MTP fusion surgeries (41 open and 26 MIS) were performed on 65 patients with a primary diagnosis of hallux rigidus. Open surgery and MIS groups had similarly high fusion rates: 95% (39/41) and 96% (25/26), respectively (P = .84). We identified no difference in overall complication rates: 20% for open surgery and 23% for MIS (P = .73). This retrospective analysis of 67 first MTP arthrodesis procedures showed no significant differences in fusion success or complications in the short term when comparing MIS to open surgery. Further studies are needed to elucidate potential differences between MIS vs open surgery. Level III, retrospective comparative study.

Short-term results in a population based study indicate advantage for minimally invasive rectal cancer surgery versus open

BackgroundThe aim of this study was to determine if minimally invasive surgery (MIS) for rectal cancer is non-inferior to open surgery (OPEN) regarding adequacy of cancer resection in a population based setting.MethodsAll 9,464 patients diagnosed with rectal cancer 2012–2018 who underwent curative surgery were included from the Swedish Colorectal Cancer Registry. Primary outcomes: Positive circumferential resection margin (CRM < 1 mm) and positive resection margin (R1). Non-inferiority margins used were 2.4% and 4%. Secondary outcomes: 30- and 90-day mortality, clinical anastomotic leak, re-operation < 30 days, 30- and 90-day re-admission, length of stay (LOS), distal resection margin < 1 mm and < 12 resected lymph nodes. Analyses were performed by intention-to-treat using unweighted and weighted multiple regression analyses.ResultsThe CRM was positive in 3.8% of the MIS group and 5.4% of the OPEN group, risk difference -1.6% (95% CI -1.623, -1.622). R1 was recorded in 2.8% of patients in the MIS group and in 4.4% of patients in the OPEN group, risk difference -1.6% (95% CI -1.649, -1.633). There were no differences between the groups in adjusted unweighted and weighted analyses. All analyses demonstrated decreased mortality and re-admissions at 30 and 90 days as well as shorter LOS following MIS.ConclusionsIn this population based setting MIS for rectal cancer was non-inferior to OPEN regarding adequacy of cancer resection with favorable short-term outcomes.

Outcomes following minimally invasive approaches vs. open extended lobectomy for non-small cell lung cancer: a propensity-matched analysis of the National Cancer Database.

Traditional thoracotomy, an invasive surgical procedure, has been the standard approach for extended lobectomy in treating non-small cell lung cancer (NSCLC). However, minimally invasive surgery (MIS) has gained traction with advancements in surgical techniques. Despite this, the outcomes of extended lobectomy via a minimally invasive approach remain largely uncharted. Using the comprehensive National Cancer Database (NCDB), our research aimed to clarify the safety, feasibility, and efficacy of minimally invasive extended lobectomy in patients diagnosed with NSCLC. Our study encompassed a selection of patients with NSCLC who underwent extended lobectomy (defined as lobectomy or bilobectomy with chest wall, diaphragm or pericardial resection) between 2010 and 2014. Through propensity score matching (PSM), we ensured a balanced comparison between patients who underwent MIS and those who opted for the traditional open extended lobectomy. Both univariate and multivariate analyses were employed to discern whether the surgical approach had any significant impact on the prognosis of patients undergoing this specific procedure. Before PSM, our dataset included 3,934 patients. After 1:2 PSM, the MIS group included 683 cases, while the open group included 1,317 cases. One notable finding was the reduced average postoperative hospital stay for the MIS group at 7.15 days compared to the open group at 8.40 days (P<0.001). Furthermore, the 5-year survival rate was similar, with the MIS group at 53.1% and the open group at 51.3% (P=0.683). The results of our study suggest that MIS for extended lobectomy not only is safe and feasible but also is oncologically effective. However, it is imperative to note that these encouraging findings necessitate further validation through prospective studies to ascertain the full scope of benefits and potential risks associated with MIS.

Abstract WMP73: Minimally Invasive Surgery for Intracerebral Hemorrhage: Meta-Analysis of High Quality RCTs

Background: Intracerebral hemorrhage (ICH) represents a devastating clinical entity with disproportionately higher rates of mortality and functional disability compared to ischemic stroke. As large trials of craniotomy in ICH failed to prove functional benefits, minimally invasive surgery (MIS) represents a potential frontier of ICH management with evidence of functional and mortality improvements. We aimed to provide level A evidence of MIS role in ICH management. Methods: Independent authors searched four electronic databases (Medline, Embase, Web of Science, and CENTRAL) and assessed the methodological quality of included studies using the Cochrane risk of bias tool (RoB2). Only high-quality (low risk of bias in all RoB2 domains) randomized clinical trial (RCTs) were included. We pooled odd ratios (ORs) with corresponding 95% confidence intervals (CIs) using random-effects model. Results: Six high-quality RCTs met our inclusion criteria. Among 1551 ICH patients, 810 were allocated to the MIS group and 741 to non-MIS. MIS was associated with significantly lower odds of mortality or disability at 90-days (OR, 0.71 [95% CI, 0.52-0.97]; p = 0.03) and lower odds of 90-days mortality (OR, 0.71 [95% CI, 0.49-1.03]; p = 0.07). Rates of functional independence and favorable functional outcomes was higher in MIS treated individuals (OR, 1.81 [95% CI, 0.78-1.79]; p = 0.43) and (OR, 1.31 [95% CI, 0.96-1.78]; p = 0.09), respectfully. Conclusions: This meta-analysis provides level A evidence that supports the current notion of mortality and functional improvement in ICH individuals treated with MIS. Further RCTs are warranted to validate the generalizability of these results.

Radiographic Comparison of Open and Minimally Invasive Distal Chevron Metatarsal Osteotomy in Patients With Hallux Valgus

This study aimed to compare radiographic outcomes of open and minimally invasive surgery (MIS) in patients with hallux valgus. We reviewed data of patients with hallux valgus who underwent open or minimally invasive distal chevron osteotomy at our institution. Radiographic assessment was completed preoperatively, immediate postoperatively, and one year postoperatively using eight weight bearing parameters . The classic distal chevron osteotomy method was used for open surgery and a modified method that added percutaneous K-wire fixation to the minimal invasive Chevron-Akin (third-generation MIS) was used for correction of the distal metatarsal articular angle (DMAA). A total of 65 feet (33 open surgeries and 32 MIS) were included. The HVA, IMA, and DMAA improved significantly following surgery regardless of surgical method (p<0.001). Other radiographic indicators showed no statistically significant differences after surgery. DMAA improved by 71.0±14.2% after surgery, and the open surgery group showed less significant reduction in DMAA (49.7±25.7%, p<0.001). Other parameters showed no difference between the two groups regarding relative postoperative changes. The MIS group showed shorter operation time (p<0.001) and hospitalization period (p=0.034) than did the open surgery group. Therefore, the MIS group is expected to be cost-effective. Radiographic measurements revealed comparable outcomes of MIS compared with open surgery. Additionally, adding percutaneous K-wire fixation during MIS had an advantage in correcting DMAA compared with open surgery. Furthermore, the correction of DMAA could reduce recurrence of valgus deformity of the hallux.

Real-world Nationwide Outcomes of Minimally Invasive Surgery for Advanced Gastric Cancer Based on Korean Gastric Cancer Association-Led Survey.

The study aimed to investigate real-world surgical outcomes of minimally invasive surgery (MIS) for advanced gastric cancer using Korean Gastric Cancer Association (KGCA)-led nationwide data. A nationwide survey of patients who underwent surgical treatment for gastric cancer in 2019 was conducted by the KGCA. A total of 14,076 patients from 68 institutions underwent surgery, and 4,953 patients diagnosed with pathological stages IB-III gastric cancer were included. Among them, 1,689 patients who underwent MIS (MIS group) and 1,689 who underwent the open approach (open group) were matched using propensity score in a 1:1 ratio. Surgical outcomes were compared, and multivariate analysis was performed to identify the independent factors for overall morbidity. The MIS group had a lower proportion of D2 lymphadenectomy, total omentectomy, and combined resection. However, the number of harvested lymph nodes was higher in the MIS group. Better surgical outcomes, including less blood loss and shorter hospital stay, were observed in the MIS group, and the overall morbidity rate was significantly lower in the MIS group (17.5% vs. 21.9%, P=0.001). The mortality rates did not differ significantly between the 2 groups. In the multivariate analysis, the minimally invasive approach was a significant protective factor against overall morbidity (odds ratio, 0.799; P=0.006). Based on the Korean nationwide data, MIS for stage IB-III gastric cancer had better short-term outcomes than the open approach, including lower rates of wound complications, intra-abdominal abscesses, and cardiac problems.

A retrospective study comparing minimally invasive versus open surgical resection of small intestinal neuroendocrine neoplasms at a tertiary referral center

IntroductionNeuroendocrine neoplasms (SI-NEN) are the commonest malignancies of the small intestine. Traditionally, surgical treatment for SI-NEN has been open surgery. PurposeThe purpose of this study was to compare minimally invasive surgery (MIS) with the traditional open surgery approach for treating SI-NEN in a Swedish population. MethodsPatients with histopathological confirmed SI-NEN who underwent open surgery or MIS resection within 2009–2021 were extracted from the hospital's medical records. Results65 patients were included in this study, with 35 (54 %) undergoing MIS and 30 (46 %) undergoing open surgery. We found no statistically significant difference (p = 0.173) in the frequency of R0 resections (MIS group n = 34 (97 %), open surgery group n = 26 (87 %)). Nor was there a significant difference (p = 0.101) when comparing the median number of resected lymph nodes (MIS group n = 13.5, open surgery group n = 10). A post-operative paralytic ileus was more often reported (p = 0.052) in the MIS group (n = 9, 26 %) compared to the open surgery group (n = 2, 7 %). In light of this, the days of hospital stay did not differ significantly (MIS group median = 6, IQR (5–8), open surgery group median = 6, IQR (5–9)). The Kaplan-Meier analysis did not reveal differences concerning cancer-related deaths (p = 0.109). ConclusionThe results from this study support that a MIS approach for the treatment of SI-NEN may not be inferior to open surgery. The higher number of resected lymph nodes and R0 resections may even speak in favor for a MIS approach. More studies with a longer time of observation are needed to further support this conclusion.

Comparison of Minimally Invasive Surgery with Open Surgery for Type II Endometrial Cancer: An Analysis of the National Cancer Database.

Prior studies comparing minimally invasive surgery with open surgery among patients with endometrial cancer have reported similar survival outcomes and improved perioperative outcomes with minimally invasive surgery (MIS). However, patients with Type II endometrial cancer were underrepresented in these studies. We sought to compare the overall survival and surgical outcomes between open surgery and MIS in a large cohort of women with Type II endometrial cancer. Using data from the National Cancer Database, we identified a cohort of women who underwent hysterectomy for type II endometrial cancer (serous, clear cell, and carcinosarcoma) between January 2010 and December 2014. The primary outcome was a comparison of the overall survival for MIS with that for the open approach. The secondary outcomes included a comparison of the length of hospital stay, readmission within 30 days of discharge, and 30- and 90-day mortality. Outcomes were compared between the cohorts using the Mann-Whitney U test, Pearson's chi-square test, or Fisher's exact test. Multivariable logistic regression with inverse propensity weighting was used to determine clinical characteristics that were statistically significant predictors of outcomes. p values < 0.05 were considered significant. We identified 12,905 patients with Type II, Stage I-III endometrial cancer that underwent a hysterectomy. In total, 7123 of these women (55.2%) underwent MIS. The rate of MIS increased from 39% to 64% over four years. Women who underwent MIS were more often White, privately insured, older, and had a higher income. The laparotomy group had a higher rate of carcinosarcoma histology (30.9% vs. 23.6%, p < 0.001), stage III disease (38.4% vs. 27.4%, p < 0.001), and larger primary tumors (59 vs. 45 mm, p < 0.001). Lymph node dissection was more commonly performed in the MIS group (89.6% vs. 85.4%, p < 0.001). With regard to adjuvant therapy, subjection to postoperative radiation was more common in the MIS group (37% vs. 40.1%, p < 0.001), while chemotherapy was more common in the laparotomy group (37.6% vs. 33.9%, p < 0.001). The time interval between surgery and the initiation of chemotherapy was shorter in the MIS group (39 vs. 42 days, p < 0.001). According to the results of propensity-score-weighted analysis, MIS was associated with superior overall survival (101.7 vs. 86.7 months, p = 0.0003 determined using the long-rank test), which corresponded to a 10% decreased risk of all-cause mortality (HR 0.9; CI 0.857-0.954, p = 0.0002). The survival benefit was uniform across all three histology types and stages. MIS was associated with superior perioperative outcomes, including shorter length of stay (1 vs. 4 days, p < 0.001), lower 30-day readmission rates (2.5% vs. 5%), and lower 30- and 90-day postoperative mortality (0.5% vs. 1.3% and 1.5% vs. 3.6%, respectively; p < 0.001 for both). The increased adoption of MIS from 2010 to 2014 corresponds to a decrease in 90-day postoperative mortality (2.8% to 2.2%, r = -0.89; p = 0.04) and overall mortality (51% to 38%, r = -0.95; p = 0.006). In a large cohort of patients from the National Cancer Database, MIS was associated with improved overall survival and superior perioperative outcomes compared to open surgery among women with Type II endometrial cancer. A decrease in postoperative mortality and a shorter interval between surgery and the initiation of chemotherapy may contribute to the survival benefit of MIS. A racial and economic disparity in the surgical management of Type II endometrial cancer was identified, and further investigation is warranted to narrow this gap and improve patient outcomes.