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Abstract Background The study aimed to calculate chest-wall skin dose associated with different frequencies of bolus applications in post-mastectomy three-dimensional conformal radiotherapy (3D-CRT) and to provide detailed information in the selection of an appropriate bolus regimen in this clinical setting. Methods CT-Simulation scans of 22 post-mastectomy patients were used. Chest wall for clinical target volume (CTV) and a volume including 2-mm surface thickness of the chest wall for skin structures were delineated. Precise PLAN 2.11 treatment planning system (TPS) was used for 3D-CRT planning. 50 Gy in 25 fractions were prescribed using tangential fields and 6-MV photons. Six different frequencies of bolus applications (0, 5, 10, 15, 20, and 25) were administered. Cumulative dose-volume histograms were generated for each bolus regimen. The minimum, maximum and mean skin doses associated with the bolus regimens were compared. To test the accuracy of TPS dose calculations, experimental measurements were performed using EBT gafchromic films. Results The mean, minimum and maximum skin doses were significantly increased with increasing days of bolus applications (p < 0.001). The minimum skin doses for 0, 5, 10, 15, 20, and 25 days of bolus applications were 73.0% ± 2.0%, 78.2% ± 2.0%, 83.3% ± 1.7%, 88.3% ± 1.6%, 92.2% ± 1.7%, and 93.8% ± 1.8%, respectively. The minimum skin dose increments between 20 and 25 (1.6% ± 1.0%), and 15 and 20 (4.0% ± 1.0%) days of bolus applications were significantly lower than the dose increments between 0 and 5 (5.2% ± 0.6%), 5 and 10 (5.1% ± 0.8%), and 10 and 15 (4.9% ± 0.8%) days of bolus applications (p < 0.001). The maximum skin doses for 0, 5, 10, 15, 20, and 25 days of bolus applications were 110.1% ± 1.1%, 110.3% ± 1.1%, 110.5% ± 1.2%, 110.8% ± 1.3%, 111.2% ± 1.5%, and 112.2% ± 1.7%, respectively. The maximum skin dose increments between 20 and 25 (1.0% ± 0.6%), and 15 and 20 (0.4% ± 0.3%) days of bolus applications were significantly higher than the dose increments between 0 and 5 (0.2% ± 0.2%), 5 and 10 (0.2% ± 0.2%), and 10 and 15 (0.2% ± 0.2%) days of bolus applications (p ≤ 0.003). The TPS overestimated the near-surface dose 10.8% at 2-mm below the skin surface. Conclusion In post-mastectomy 3D-CRT, using a 1-cm thick bolus in up to 15 of the total 25 fractions increased minimum skin doses with a tolerable increase in maximum doses.

Abstract Background This study aimed to analyze three-dimensional (3D) dosimetric data of conventional two-dimensional (2D) palliative spinal bone irradiation using different reference points and treatment plans with respect to the International Commission on Radiation Units and Measurements (ICRU) Report 50. Methods Forty-five simulation CT scans of 39 patients previously treated for thoraco-lumbar spinal bone metastases were used. Three different treatment plans were created: (1) single posterior field plans using the ICRU reference points (ICRUrps); (2) single posterior field plans using the International Bone Metastasis Consensus Working Party reference points (IBMCrps); (3) two opposed anterior-posterior (AP-PA) field plans using the ICRUrps. The intended dose range for planning target volume (PTV) was 90% to 110% of the prescribed dose for AP-PA field plans. Cumulative dose-volume histograms were generated for each plan, and minimum, maximum and mean doses to the PTV, medulla spinalis, esophagus and intestines were analyzed. Results The mean percentages of minimum, maximum and mean PTV doses ± standard deviation were, respectively, 91 ± 1.3%, 108.8 ± 1.3% and 99.7 ± 1.3% in AP-PA field plans; 77.3 ± 2.6%, 122.2 ± 4.3% and 99.8 ± 2.6% in ICRUrp single field plans; and 83.7 ± 3.3%, 133.9 ± 7.1% and 108.8 ± 3.3% in IBMCrp single field plans. Minimum doses of both single field plans were significantly lower (p < 0.001) while maximum doses were significantly higher (p < 0.001) than AP-PA field plans. Minimum, maximum and mean doses were higher in IBMCrp single field plans than in ICRUrp single field plans (p < 0.001). The mean medulla spinalis doses were lower in AP-PA field plans than single posterior field plans (p < 0.001). Maximum doses for medulla spinalis were higher than 120% of the prescribed dose in 22 of 45 (49%) IBMCrp single field plans. Mean esophagus and intestinal doses were higher (p < 0.001) in AP-PA field plans than single field plans, however, less than 95% of the prescribed dose. Conclusion In palliative spinal bone irradiation, 2D conventional single posterior field radiotherapy did not accomplish the ICRU Report 50 recommendations for PTV dose distribution, while the AP-PA field plans did achieve the intended dose ranges with a homogenous distribution and reasonable doses to the medulla spinalis, esophagus and intestines.

Ectopic pancreatic tissue (EPT) is a rare condition in which pancreatic tissue is situated outside its normal position. It is commonly found in the stomach and small bowel, typically asymptomatic, and is usually discovered incidentally during histopathological analysis. Although fewer than 40 cases of ectopic pancreatic tissue in the gallbladder have been reported, its significance relies on the risk of malignant transformation, highlighting the need for a thorough pathological study. This case report describes the presence of EPT in the gallbladder incidentally found during the pathological examination following a laparoscopic cholecystectomy of a 37-year-old female due to chronic cholecystitis., Competing Interests: None declared., (Published by Oxford University Press and JSCR Publishing Ltd. © The Author(s) 2024.)

Hepatocellular carcinoma (HCC) is the second most common cause of cancer mortality worldwide. Liver resection is considered the pillar of curative treatment, although it is usually reserved for early-stage localized disease since the presence of metastases carries a poor prognosis. Despite advances in imaging, surgical techniques, and systemic therapy, the recurrence rate after oncologic resection remains high, even with localized disease. In the setting of extrahepatic HCC recurrence, there is no consensus regarding the best treatment strategy. Nevertheless, while the development of metastasis can be considered an expression of systemic disease, surgical resection may prolong survival. We report the case of a patient with a history of an oncologic hepatic resection for HCC, successfully treated with resection of an isolated peritoneal cavity metastasis. This case demonstrates that an aggressive approach involving the resection of extrahepatic HCC metastasis should be considered in select patients with the intention of achieving prolonged survival., Competing Interests: None declared, (Published by Oxford University Press and JSCR Publishing Ltd. © The Author(s) 2024.)

Background: Multiquadrant procedures are technically more demanding than sequential operations. The new single port (SP) system allows to work in every abdominal quadrant maintaining an adequate triangulation without the need for changes in the port positioning., Methods: In February 2020, two patients underwent a robotic SP partial nephrectomy for malignancy combined with a cholecystectomy and a left inguinal hernia repair respectively., Results: Both procedures were successfully completed with one robotic docking and without the need for conversion. The operative time was 213 minutes for the right partial nephrectomy (126 min) with cholecystectomy (18 min), and 257 minutes for the left partial nephrectomy (161 min) with inguinal hernia repair (35 min). Estimated blood loss was 200 (150-250) mL, while the total warm ischemia time was 15 minutes for the right partial nephrectomy and 53 minutes for the left partial nephrectomy. There were no intraoperative complications or perioperative transfusions. The postoperative course was uneventful, and the postoperative hospital stay was 1 and 2 days. Both resections had free margins and the median tumor size was 2.5 (1.5-3.5) cm. Histopathology analysis revealed chronic cholecystitis and renal cell carcinomas with free margins and a median tumor size of 2.5 (1.5-3.5) cm. After a mean follow-up of 24 months, no surgical-related complications or recurrence were detected., Conclusions: The robotic SP approach facilitates the completion of combined surgical procedures in multiple abdominal quadrants through a single 25mm incision.

Regular postoperative follow-up appointments are critical for assessing the effectiveness of the operation and ensuring adequate nutrition, as well as for prompt identification of any complications. In this study, we aimed to determine compliance to follow-up appointments after bariatric surgery and examine factors associated with compliance. We performed a retrospective analysis of all patients who underwent bariatric surgery at the University of Illinois at Chicago between January 1st 2019 and December 30th 2019. Demographics, socio-economic variables (type of insurance, education, income, distance to hospital), type of consultation (in person vs. telehealth), and type of surgery were ascertained. Follow-up rates at the 3-month, 6-month, 12-month and 24-month visits were 61.9%, 41.2%, 29.6%, and 6.5%, respectively. In multivariable logistic regression analysis, White patients (OR 5.13 95% CI 2.03-12.95) and those using telehealth (OR 5.84, 95% CI 3.01 - 11.38) were significantly more likely to be compliant with follow-up. Strategies for improving patient adherence to postoperative follow-up are needed, particularly among persons from racial/ethnic minority backgrounds who also experience both a disparately high burden of severe obesity and poor access to quality care., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Despite the greater prevalence of obesity, African American (AA) adults represent a minority of bariatric surgery patients. The aim of this study was to determine variables associated with attrition among AA patients seeking bariatric surgery. We performed a retrospective analysis of a consecutive series of AA patients with obesity referred for surgery and who initiated the preoperative work-up as per insurance requirements. The sample was then divided between those undergoing surgery and those who did not receive surgery. The multivariable logistic regression analysis showed that male patients (OR 0.53 95% CI 0.28-0.98) and those with public insurance (OR 0.56, 95% CI 0.37 - 0.83) were significantly less likely to undergo surgery. The use of telehealth was strongly associated with receiving surgery (OR 3.53, 95% CI 2.36 - 5.29). Our results might help developing targeted strategies to reduce attrition rates among AA patients with obesity seeking bariatric surgery., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Length of stay after bariatric surgery has progressively shortened. Same-day discharge (SDD) has been reported for the 2 most common bariatric procedures, Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). The aim of this study is to evaluate the safety and success of SDD following SG and RYGB. Systematic literature search on SDD after bariatric surgery was conducted in Medline, Cochrane library, Google Scholar, and Embase. SDD was defined as discharging the patient during the day of the bariatric operation, without an overnight stay. The primary outcomes of interest were successful SDD, readmission, and morbidity rates. The secondary endpoints included reoperation and mortality rates. A proportion meta-analysis was performed to assess the outcomes of interest. A total of 14 studies with 33,403 patients who underwent SDD SG (32,165) or RYGB (1238) were included in the qualitative synthesis. Seven studies with 5000 patients who underwent SDD SG were included in the quantitative analysis, and pooled proportions (PPs) were calculated for the outcomes of interest. The SDD success rate was 63%-100% (PP: 99%) after SG and 88%-98.1% after RYGB. The readmission rate ranged from .6% to 20.8% (PP: 4%) after SDD SG and 2.4%-4% after SDD RYGB. Overall morbidity, reoperation, and mortality were 1.1%-10% (PP:4%), .3%-2.1% (PP: 1%), and 0%-.1% (PP: 0%), respectively, for SDD SG, and 2.5%-4%,1.9%-2.5%, and 0%-.9%, respectively, for SDD RYGB. SDD after SG seems feasible and safe. The outcomes of SDDRYGB seem promising, but the evidenceis stilllimitedto draw definitive conclusions. Selection criteria and perioperative protocolsmust be standardized to adequately introduce this practice., (Copyright © 2023 American Society for Metabolic and Bariatric Surgery. Published by Elsevier Inc. All rights reserved.)

Purpose: Same-day discharge (SDD) after bariatric surgery is gaining popularity. We aimed to analyze the safety of SDD after Roux-en-Y gastric bypass (RYGB) and compare its outcomes to inpatients discharged on postoperative days 1-2., Materials and Methods: We performed a retrospective analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program database for the period 2015-2020. Patients who underwent primary laparoscopic RYGB and were discharged the same day of the operation (SDD-RYGB) and inpatients discharged on postoperative days 1-2 (In-RYGB) were compared. Primary outcomes of interest were overall morbidity, serious morbidity, readmission, reoperation, intervention, and mortality rates., Results: A total of 167,188 patients were included; 2156 (1.3%) SDD-RYGB and 165,032 (98.7%) In-RYGB. Mean age (SDD-RYGB: 44.5 vs. In-RYGB: 44.6 years), proportion of females (SDD-RYGB: 81.4% vs. In-RYGB: 80.6%), and mean body mass index (SDD-RYGB: 45.8 vs. In-RYGB: 45.9 kg/m 2 ) were similar between groups. Overall morbidity (SDD-RYGB: 11.3% vs. In-RYGB: 10.2%; OR: 1.2, p = 0.08), serious morbidity (SDD-RYGB: 3.1% vs. In-RYGB: 3%; OR: 1.03, p = 0.81), reoperation (SDD-RYGB: 1.4% vs. In-RYGB: 1.2%; OR: 1.16, p = 0.42), readmission (SDD-RYGB: 4.8% vs. In-RYGB: 4.8%; OR: 1.01, p = 0.89), and mortality (SDD-RYGB: 0.04% vs. In-RYGB: 0.09%; OR: 0.53, p = 0.53) were comparable between groups. SDD-RYGB had lower risk of 30-day interventions (SDD-RYGB: 1.1% vs. In-RYGB: 1.6%; OR: 0.64, p = 0.04) compared to In-RYGB., Conclusion: Same-day discharge after RYGB seems to be safe and has comparable outcomes to admitted patients. Standardized patient selection criteria and perioperative management protocols are needed to further increase the safety of this practice., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Introduction: To date, no anti-reflux operations have been reported with the new da Vinci Single-Port (single port (SP)) robotic platform. We aimed to describe this novel surgical approach and evaluate its safety and feasibility., Methods: All robotic SP operations were performed under an Institutional Review Board approved protocol., Results: Two patients underwent robotic SP anti-reflux surgery through a single incision of 2.7 cm (one Nissen-fundoplication and one re-Redo Nissen-fundoplication). The mean docking-time was 2.5 (2-3) minutes and mean console-time was 147 (119-155) minutes. No additional ports were needed, and no intraoperative complications occurred. Patients tolerated a soft diet on postoperative day 1 and were discharged on POD-2 and 3., Conclusion: Robotic SP anti-reflux surgery appears to be safe and feasible. This platform offers similar advantages to the multiport robotic surgery, while adding lower invasiveness and an improved cosmesis. Further studies are needed to confirm our results and evaluate long-term outcomes of this surgical approach., (© 2022 The Authors. The International Journal of Medical Robotics and Computer Assisted Surgery published by John Wiley & Sons Ltd.)

Background: The demand for revisional bariatric surgery has increased, and bariatric conversions (BC) to a different procedure represent most of the revisional cases. The 2020 Metabolic and Bariatric Surgery Accreditfnation and Quality Improvement Program (MBSAQIP) database was expanded to include additional variables on BC. This study aims to analyze the indications and outcomes of BC., Methods: A retrospective analysis of the 2020 MBSAQIP database was performed. Patients who underwent BC were included in the analysis. Index procedures, rates, and indications for BC of the different bariatric operations were described. Outcomes of the most frequent BC were analyzed., Results: A total of 168,548 bariatric surgeries were done; 20,387 (12.1%) were revisional, and from those 15,031 (73.7%) were BC. The most converted index operations were sleeve gastrectomy (SG) (49.3%) and adjustable gastric banding (AGB) (45.9%). The most frequent conversions were SG to Roux-en-Y gastric bypass (RYGB) (40.3%) for gastroesophageal reflux disease (GERD) (54.2%) and weight loss failure (WLF) (35.8%), AGB to SG (27%) or RYGB (16.2%) for WLF (67% and 61.3%, respectively), and SG to biliopancreatic diversion with duodenal switch (3.2%) or single anastomosis duodeno-ileal bypass (2%) for WLF (91.2% and 92.4%, respectively). Postoperative overall morbidity, serious morbidity, reoperation, and mortality rates ranged from 5.3 to 20.8%, 2.3 to 19.2%, 1.5 to 10%, and 0 to 0.8%, respectively., Conclusions: BC represents the most frequent revisional bariatric procedure. GERD and WLF are the main causes for BC. Further research is needed to define the ideal BC according to the index procedure and indication., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Despite being equally affected by obesity, females represent the vast majority of obese patients undergoing bariatric surgery. We aimed to identify potential gender disparities among African American (AA) patients seeking bariatric surgery at our institution. Demographics, presence of comorbidities, socio-economic variables, type of consultation, and attrition rates were compared among male and female patients. A total of 710 patients were referred for bariatric surgery; 468 (65.9%) were AA: 68 (14.5%) male and 400 (85.5%) female. Male patients were older, were more frequently married, and had higher prevalence of obesity-related comorbidities, as compared to female patients. Male patients showed significantly higher high school graduation rates, higher income, and longer distance to the hospital. The use of telehealth was similar in both groups. Male patients had significantly higher attrition rates (73.5% vs. 56.7%, p=0.009). Strategies to better promote and increase access to bariatric surgery to male patients should be prioritized., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Background: Despite the high success rate associated with Heller myotomy in the treatment of primary achalasia, symptom persistence or relapse occurs in approximately 10-20% of patients. Unfortunately, the ideal treatment after failed myotomy is not well established yet. We present a didactical video with a stepwise technique to perform a robotic revisional procedure after failed Heller myotomy., Methods: In this report, each surgical step is thoroughly described and visually represented with useful technical tips that might help in improving surgical results of revisional Heller myotomy., Results: In patients with previous surgical myotomy, the robotic platform with its high-definition magnified view and EndoWrist instruments allow for a safe and precise redo surgical myotomy., Conclusions: Despite its improved surgical capabilities, the role of robotic redo Heller myotomy in the treatment algorithm of patients with recurrent symptoms after failed surgical myotomy should be further explored., (© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Laparoscopic sleeve gastrectomy is one of the most common bariatric surgical procedures. Despite being easier to perform than other bariatric procedures, it is not free of complications. Leaks are some of the most severe events, and are observed in around 0.5-6% of cases. Use of the near-infrared indocyanine green (ICG) perfusion test during sleeve gastrectomy seems to be promising. However, its application in sleeve gastrectomy is still in fieri. Similarly, ICG is not commonly used in Roux-en-Y gastric bypass. This report presents the main evidence from selected literature regarding the use of ICG during sleeve gastrectomy and Roux-en-Y gastric bypass, along with our remarks. It also provides intraoperative video clips and photographs showing the use of ICG in this surgical field.

Background: With the rising number of bariatric surgeries performed annually, there has also been an increase in revisional bariatric surgeries (RBS). The aim of this study is to evaluate the safety and postoperative outcomes of RBS performed with a minimally invasive approach., Methods: Retrospective analysis on a prospectively collected database of patients who underwent minimally invasive RBS between 2012 and 2019. Primary endpoints were conversion rate, major morbidity, mortality, and 30-day reoperation rate. Comparative analysis of laparoscopic adjustable gastric banding (LAGB) conversion to sleeve gastrectomy (SG) vs. conversion to Roux-en-Y gastric bypass (RYGB) was performed., Results: A total of 221 patients underwent minimally invasive RBS, 137 (62%) laparoscopically and 84 (38%) robotically. The most common RBS were LAGB to SG (59.3%) and LAGB to RYGB conversions (16.7%). The main indication was weight loss failure (88.7%). Conversion rate, major morbidity, and mortality were 0.9, 3.2, and 0.4%, respectively. Urgent reoperation was required in 3.2% of cases. Total weight loss at 1 and 2-years follow- were 14.3 and 17.3%, respectively. Comparative analysis of LAGB conversion to SG vs. RYGB showed similar major morbidity (SG: 2.3% vs. RYGB 0%, p = 1). Greater total weight loss was achieved in LAGB to RYGB conversions at 1-year (SG: 14.8% vs. RYGB 25.3%, p < 0.001)., Conclusions: Minimally invasive RBS can be performed safely in a broad patient population with low conversion and complication rates, and improved weight loss outcomes. LAGB to RYGB conversions are associated with greater weight loss. Further randomized trials are needed to draw more conclusive recommendations., Competing Interests: FB has an education agreement with intuitive. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Xie, Dreifuss, Schlottmann, Cubisino, Mangano, Vanetta, Baz, Valle, Bianco, Gangemi and Masrur.)

Background: Same-day discharge after sleeve gastrectomy (SG) is gaining popularity. We aimed to determine risk factors associated with readmission in patients who underwent same-day discharge SG., Methods: We performed a retrospective analysis of the Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) database for the period 2015-2018. Patients who underwent SG and were discharged the same day of the operation were included in the analysis. Multivariable logistic regression analysis was performed to determine risk factors for readmission., Results: A total of 466,270 SG were performed during the study period; 14,624 (3.1%) patients were discharged the same day and were included in the analysis. Mean age was 43.4 (14.7-80) years and 11,718 (80.1%) were female. Mean preoperative BMI was 43.7 ± 7.4 kg/m 2 . Mean operative time was 58.3 ± 32.4 min. Thirty-day reoperation, reintervention, and mortality rates were 0.7%, 0.7%, and 0.1%, respectively. Readmission rates were similar in same-day discharge and inpatient SG (2.9% vs. 3%, p = 0.5). Female sex (OR 1.52, 95% CI 1.15-2.00), preoperative gastroesophageal reflux disease (OR 1.33, 95% CI 1.08-1.64), renal insufficiency (OR 3.06, 95% CI 1.01-9.32), and intraoperative drain placement (OR 1.78, 95% CI 1.37-2.31) were independent risk factors for readmission following same-day discharge SG., Conclusions: Same-day discharge SG appears to be safe and is associated with low readmission rates. However, the identification of preoperative and intraoperative variables associated with higher risk of readmission might help defining safer and more effective same-day discharge protocols., (© 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)

Bariatric surgery has been demonstrated to be effective in achieving significant weight loss and remission of obesity-related comorbidities. However, a percentage of patients fail to lose enough weight, regain weight, or experience postoperative complications, requiring additional interventions. Revisional bariatric surgeries (RBS) involve the wide spectrum of procedures that aim to treat complications of the index operation or achieve further weight loss. These are technically challenging procedures due to adhesions of the internal organs, reduced working space, and a distorted anatomy. Indications, timing, and type of operation for RBS are not standardized, and there is no consensus on the best surgical approach. Some authors claim a robotic platform could be advantageous in these types of procedures that are performed in reduced, deep operating fields, or those requiring precision and accuracy. This review examines the most current and representative literature on the outcomes of robot-assisted RBS. Included studies demonstrate the safety and feasibility of the robotic approach for RBS. However, long operative times and high costs remain major drawbacks of the device. Finally, if we consider that many centers have not yet completed the learning curve for robot-assisted RBS, the potential for improved outcomes seems promising.

Introduction: Gallstone ileus is an uncommon complication of long-term cholelithiasis. Emergent operations for gallstone ileus are associated with high postoperative morbidity. When feasible, the minimally invasive approach might help to improve the postoperative outcomes., Presentation of Case: A 63-year-old female was admitted for abdominal pain and vomiting. Computed tomography (CT) scan showed a cholecystoduodenal fistula and a 5 × 3 cm gallstone in the jejunum causing obstruction. An emergent laparoscopy was performed, and a gallstone was found inside the jejunum 40 cm distal to the ligament of Treitz. The 5 cm gallstone was extracted through an antimesenteric enterotomy. The jejunum was then closed transversally using interrupted sutures. The postoperative course was uneventful, and the patient was discharged on postoperative day 3., Discussion: Surgery is the mainstream treatment for gallstone ileus. Multiple operations and surgical approaches have been described: enterolithotomy (EL), one-stage surgery (EL, cholecystectomy, and fistula closure), bowel resection, and two-stage surgery (EL and delayed cholecystectomy with fistula closure). The choice of the procedure depends on the patient's characteristics, comorbidities, and experience of the surgical team., Conclusion: In the emergency setting, a simple enterolithotomy with primary closure seems to be the optimal approach to solve the intestinal obstruction with low postoperative morbidity. The laparoscopic approach to gallstone ileus results in additional benefits for patients' recovery., (Copyright © 2021. Published by Elsevier Ltd.)

Background and objective Earlier uncertain implications of the coronavirus disease 2019 (COVID-19) pandemic on the pediatric population prompted the authorities to close schools worldwide under the premise that school settings would serve as drivers of an increase in the cases of COVID-19. Safe and equitable full-in-person school instruction is a critical factor in the continued educational gains of children and for their general well-being. The objective of this study was to report epidemiological trends related to the increasing percentage of students returning to in-person instruction, the suspected in-school transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus that causes COVID-19, and countywide COVID-19 case rates during the first 21 weeks of school reopening in Marin County, CA, in the fall of 2020. Materials and methods The institutional review board (IRB) approval was waived for this study as it did not involve any identifiable human subjects data. Retrospective electronic reviews of countywide COVID-19 daily case count and COVID-19-related reports associated with in-person school participants from 77 schools in Marin County, CA, from September 8, 2020, to January 29, 2021, were conducted. The data were made available in collaboration with the Marin County Office of Education (MCOE) and Marin County Department of Health and Human Services (Marin HHS). Descriptive trends analyses were performed to determine whether the phased increase of students attending in-person learning was a significant contributor to countywide COVID-19 incidence rate, crude rate, and in-school COVID-19 viral transmission. This is the first long retrospective study of COVID-19 data among the reopened school population during the second half of the first pandemic year. It was conducted in a 21-week surveillance period involving an immense collaboration between Marin County's public health officials and school administrators. Results Over the 21-week observational period involving 17,639 students, 4,938 school staff, and 899,175 student days, the countywide COVID-19 crude rate decreased (from 89.9 to 35.89 per 10,000) as more students returned to in-person learning. The schools' strict adherence to public health guidance and site-specific safety plans against COVID-19 yielded a significantly reduced incidence rate of 0.84% among in-person learning participants; only nine cases were traced to suspected in-school SARS-CoV-2 transmission by way of rigorous contact tracing. The countywide COVID-19 incidence rate was 2.09%. Conclusions It is possible to minimize COVID-19 transmissions in in-person learning settings with cohesive mitigation strategies, specifically strict adherence to proper masking by students and staff while on school grounds. There is no clear correlation that the increasing phased return of students to in-person school drove an increase in countywide COVID-19 cases in Marin County, CA. Our findings revealed that schools were capable of safely resuming operations by following public health orders and recommendations. The increasing percentage of students returning to in-person school did not drive an increased COVID-19 case rate in the community. On the contrary, this analysis revealed that there was a drop in countywide COVID-19 cases as the phased student return percentage increased., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2021, Paff et al.)

There is widespread concern regarding various aspects of psychoanalytic education. A recent paper by Patrick Casement, drawn widely from his long experience as a supervisor both in the U.K. and abroad, implied that the British Psychoanalytical Society is not exempt from these concerns. To investigate this, a semistructured, anonymous questionnaire was devised and sent to all candidates and all recently qualified analysts at the society. Overall there was a 58% response rate, with 77% of candidates and 39% of recently qualified analysts responding. Concerns were expressed about aspects of the training, but on the whole these were balanced by appreciation. Although strong criticism was expressed by a minority, it seems that when something goes wrong for a candidate, this experience is felt keenly by the peer group as well. The results are discussed in the context of the current training and ethos of the British Society, as well as in relation to a more widespread move toward "competency-based" education. The maturational tasks facing both candidates and trainers are also addressed.

The methodology to carry out a diagnostic test for hydatid disease is reported. Full hydatid fluid was used as antigen and specific IgG was detected. 61 sera from patients in whom hydatid disease was subsequently confirmed at surgery, 28 sera of patients with other diseases and 16 sera from blood donors were evaluated. The sensitivity and specificity were established on the basis of statistical criteria. In the group of patients with hydatid disease, sensitivity was 98.4%, with only one nonreactive serum. Specificity was 60.6% and was higher with increasing age of the patients or depending on the cyst localization (it was higher in hepatic than in pulmonary cysts).