Metaverse and Telementoring: From Surgery to Workshop.

BACKGROUND: The Coronavirus 2019 (COVID-19) pandemic has favored the growth of telemedicine systems and in this context the idea of Metaverse was born and developed. A 3D reality in which people can interact with each other through digital reproductions of themselves. Metaverse has already been tested in numerous medical fields due to its ability to combine visual and auditory information with tactile sensations. The purpose of this study is to highlight its potential also in its ability to be used as a telementoring place where the skills and knowledge of surgeons from all over the world can be combined. MATERIAL AND METHODS: The first HPB Surgery Workshop was held at the "Metaverse Surgical Hospital, USA". During the workshop, surgeons located in various parts of the world reported on hepatic, pancreatic and biliary tract surgery and remotely supported the execution of a robotic liver resection. RESULTS: The Metaverse gave the opportunity for surgeons to meet and discuss HPB pathologies and its surgical strategies and for surgeons in training to interface with experts by participating in a moment of advanced training. CONCLUSION: In the Metaverse, telementoring can be used at very low cost to improve clinical and surgical practice.

Neutrophil-like Monocytes Increase in Patients with Colon Cancer and Induce Dysfunctional TIGIT+ NK Cells.

Myeloid-derived suppressor cells (MDSCs) are a heterogeneous family of immune cells including granulocytic (CD14neg/CD15+/HLA-DRneg) and monocytic subtypes (CD14+/CD15neg/HLA-DRneg). In the present study, we found a population of monocytes expressing the granulocyte marker CD15 that significantly increased in both peripheral blood (PB) and tumoral tissues of patients with colorectal cancer (CRC). Further phenotypical analysis confirmed the granulocytic-like features of this monocyte subpopulation that is associated with an increase in granulocyte-monocyte precursors (GMPs) in the PB of these patients (pts). Mechanistically, this granulocyte-like monocyte population suppressed NK cell activity by inducing TIGIT and engaging NKp30. Accordingly, an increased frequency of TIGIT+ NK cells with impaired functions was found in both the PB and tumoral tissue of CRC pts. Collectively, we provided new mechanistic explanations for tumor immune escape occurring in CRC by showing the increase in this new kind of MDSC, in both PB and CRC tissue, which is able to significantly impair the effector functions of NK cells, thereby representing a potential therapeutic target for cancer immunotherapy.

Anastomotic Leak Rate and Prolonged Postoperative Paralytic Ileus in Patients Undergoing Laparoscopic Surgery for Colo-Rectal Cancer After Placement of No-Coil Endoanal Tube.

BACKGROUND: Colorectal cancer (CRC) is the second most common gastrointestinal tumor in men and the third in women. Left-hemicolectomy (LC) and low anterior resection (LAR) are considered the gold standard curative treatment. In this retrospective study, we evaluated the presence or absence of post-operative complications, in all patients who underwent Video-laparoscopic (VLS) LAR/LC with No Coil trans-anal tube positioning, and compared the data with the current literature on the topic. METHODS: Thirty-nine patients diagnosed with CRC of the descending colon, splenic flexure, sigma, and rectum were recruited. LC was performed for sigmoid and descending colon cancers, while LAR was applied for tumors of the upper two-thirds of the rectum. The No Coil trans-anal tube (SapiMed Spa, Alessandria, Italy) was placed in all patients of the study at the end of surgical treatment. RESULTS: Eighteen patients received a LAR-VLS (46%) and 21 patients received a LC-VLS (54%). The average length of hospital stay after surgery was 7 days. PPOI occurred in only one in 39 patients (2.6%) who had undergone LAR-VLS. As for complications, in no patient of the study did AL (0%) occur. CONCLUSION: In patients undergoing LAR-VLS and LC-VLS, we performed colorectal anastomosis and in the same surgical operation we introduced the No-Coil device. Although this is a preliminary study and subject to further investigation, we believe that the No Coil tube positioning may reduce the time of presence of first flatus and feces and the risk of AL.

SICOB-endorsed national Delphi consensus on obesity treatment optimization: focus on diagnosis, pre-operative management, and weight regain/insufficient weight loss approach.

PURPOSE: Overweight and obesity affects 60% of adults causing more than 1.2 million deaths across world every year. Fight against involved different specialist figures and multiple are the approved weapons. Aim of the present survey endorsed by the Italian Society of Bariatric Surgery (SICOB) is to reach a national consensus on obesity treatment optimization through a Delphi process. METHODS: Eleven key opinion leaders (KOLs) identified 22 statements with a major need of clarification and debate. The explored pathways were: (1) Management of patient candidate to bariatric/metabolic surgery (BMS); (2) Management of patient not eligible for BMS; (3) Management of patient with short-term (2 years) weight regain (WR) or insufficient weight loss (IWL); (4) Management of the patient with medium-term (5 years) WR; and (5) Association between drugs and BMS as WR prevention. The questionnaire was distributed to 65 national experts via an online platform with anonymized results. RESULTS: 54 out of 65 invited panelists (83%) respond. Positive consensus was reached for 18/22 statements (82%); while, negative consensus (s20.4; s21.5) and no consensus (s11.5, s17) were reached for 2 statements, respectively (9%). CONCLUSION: The Delphi results underline the importance of first-line interdisciplinary management, with large pre-treatment examination, and establish a common opinion on how to properly manage post-operative IWL/WR. LEVEL OF EVIDENCE V: Report of expert committees.

Enhanced recovery after bariatric surgery: an Italian consensus statement.

BACKGROUND: Enhanced recovery after bariatric surgery (ERABS) is an approach developed to improve outcomes in obese surgical patients. Unfortunately, it is not evenly implemented in Italy. The Italian Society for the Surgery of Obesity and Metabolic Diseases and the Italian Society of Anesthesia, Analgesia, Resuscitation and Intensive Care joined in drafting an official statement on ERABS. METHODS: To assess the effectiveness and safety of ERABS and to develop evidence-based recommendations with regard to pre-, intra-, and post-operative care for obese patients undergoing ERABS, a 13-member expert task force of surgeons and anesthesiologists from Italian certified IFSO center of excellence in bariatric surgery was established and a review of English-language papers conducted. Oxford 2011 Levels of Evidence and U.S. Preventive Services Task Force Grade Definitions were used to grade the level of evidence and the strength of recommendations, respectively. The supporting evidence and recommendations were reviewed and discussed by the entire group at meetings to achieve a final consensus. RESULTS: Compared to the conventional approach, ERABS reduces the length of hospital stay and does not heighten the risk of major post-operative complications, re-operations, and hospital re-admissions, nor does it increase the overall surgical costs. A total of 25 recommendations were proposed, covering pre-operative evaluation and care (7 items), intra-operative management (1 item, 11 sub-items), and post-operative care and discharge (6 items). CONCLUSIONS: ERABS is an effective and safe approach. The recommendations allow the proper management of obese patients undergoing ERABS for a better outcome.

The role of body image in obese identity changes post bariatric surgery.

PURPOSE: Body image is a multidimensional construct that encompasses perceptions about body size, emotions, and cognition about physical appearance. Obese identity is related to body image in the lifetime, and according to scientific literature body image dissatisfaction among obese patient persist after bariatric surgery. The objective of this review is to examine the body image changes in patients with obesity pre-and post-bariatric surgery. METHODS: We have carried out a systematic review of literature on PubMed. Initially, 169 publications have been identified, but in total, in compliance with inclusion and exclusion criteria, 15 studies have been analyzed. RESULTS: According to the examined literature, body image does not change after bariatric surgery. These patients will be difficult to adapt for a new body, because there is a persistent obese view of self. Furthermore, ex-obese patients are dissatisfied with the excessive skin after bariatric surgery. Excessive body weight, and negative self-image are replaced with dissatisfaction with excessive skin, and the factors associated with body image stability are still unknown. CONCLUSION: Literature examination raises the issue of body image dissatisfaction, but does not explain why it varies so widely across bariatric patients. Obese identity is related to body image across the lifetime and is an important factor of post-surgical outcomes. Longitudinal studies based on ideal body image pre- and post- bariatric surgery and evidence-based controlled studies on psychotherapeutic treatment for body image dissatisfaction are strongly recommended. Psychotherapy could improve body image quality and wellbeing. LEVEL I: Evidence obtained from: systematic reviews of experimental studies.

Fluorescence-based bowel anastomosis perfusion evaluation: results from the IHU-IRCAD-EAES EURO-FIGS registry.

BACKGROUND: Anastomotic leakage (AL) is one of the dreaded complications following surgery in the digestive tract. Near-infrared fluorescence (NIRF) imaging is a means to intraoperatively visualize anastomotic perfusion, facilitating fluorescence image-guided surgery (FIGS) with the purpose to reduce the incidence of AL. The aim of this study was to analyze the current practices and results of NIRF imaging of the anastomosis in digestive tract surgery through the EURO-FIGS registry. METHODS: Analysis of data prospectively collected by the registry members provided patient and procedural data along with the ICG dose, timing, and consequences of NIRF imaging. Among the included upper-GI, colorectal, and bariatric surgeries, subgroup analysis was performed to identify risk factors associated with complications. RESULTS: A total of 1240 patients were included in the study. The included patients, 74.8% of whom were operated on for cancer, originated from 8 European countries and 30 hospitals. A total of 54 surgeons performed the procedures. In 83.8% of cases, a pre-anastomotic ICG dose was administered, and in 60.1% of cases, a post-anastomotic ICG dose was administered. A significant difference (p < 0.001) was found in the ICG dose given in the four pathology groups registered (range: 0.013-0.89 mg/kg) and a significant (p < 0.001) negative correlation was found between the ICG dose and BMI. In 27.3% of the procedures, the choice of the anastomotic level was guided by means of NIRF imaging which means that in these cases NIRF imaging changed the level of anastomosis which was first decided based on visual findings in conventional white light imaging. In 98.7% of the procedures, the use of ICG partly or strongly provided a sense of confidence about the anastomosis. A total of 133 complications occurred, without any statistical significance in the incidence of complications in the anastomoses, whether they were ICG-guided or not. CONCLUSION: The EURO-FIGS registry provides an insight into the current clinical practice across Europe with respect to NIRF imaging of anastomotic perfusion during digestive tract surgery.

Targeting Stem Cells with Hyperthermia: Translational Relevance in Cancer Patients.

BACKGROUND: Tumor recurrences or metastases remain a major hurdle in improving overall cancer survival. In anticancer therapy, some patients inevitably develop chemo-/radiotherapy resistance at some point. Cancer stem cells are the driving force of tumorigenesis, recurrences, and metastases, contributing also to the failure of some cancer treatments. SUMMARY: Emergent evidence suggests that stem cell diseases are at the base of human cancers, and tumor progression and chemo-/radiotherapy resistance may be dependent on just a small subpopulation of cancer stem cells. Hyperthermia can be a strong cancer treatment, especially when combined with radio- or chemotherapy. It is a relatively safe therapy, may kill or weaken tumor cells, and significantly increases the effectiveness of other treatments. However, these mechanisms remain largely unknown. A literature search was performed using PubMed including cited English publications. The search was last conducted in December 2019. Search phrases included "stem cells," "hyperthermia," "cancer," and "therapy." Abstracts, letters, editorials, and expert opinions were not considered for the drafting of the study. Key Message: Our goal was to focus on and to summarize different biological features of cancer stem cells and new therapeutic approaches using hyperthermia and its potential translation to human clinical trials.

Occult hepatitis B virus infection predicts non-alcoholic steatohepatitis in severely obese individuals from Italy.

BACKGROUND & AIMS: Obesity is associated with non-alcoholic fatty liver (NAFL), which may progress towards non-alcoholic steatohepatitis (NASH), cirrhosis and hepatocellular carcinoma (HCC). Occult hepatitis B virus infection (OBI) may contribute to hepatic damage in patients with chronic liver disease of different aetiologies (eg HCV, alcohol). However, information on the prevalence and clinical impact of OBI in obese individuals is lacking. The aims of this study were to investigate NASH prevalence and risk factors in obese people who underwent bariatric surgery. METHODS: Two-hundred and twenty-six subjects (160 females; mean age 42.9 years ±10.8 SD) without evidence of any further cause of liver disease consecutively underwent bariatric surgery in two Italian liver centers. During surgery, all patients underwent liver biopsy for histological evaluation and molecular studies. Liver DNA extracts were tested for PNPLA3, TM6SF2, MBOAT7, IRGM polymorphisms and for OBI. Univariate and multivariate analyses were used to identify predictors of NASH. RESULTS: Histology showed NASH in 115 (50.9%) and NAFL in 111 cases (49.1%). Twenty-nine/226 (12.8%) cases had OBI, 24 (82.8%) of whom had NASH and 5 (17.2%) NAFL, whereas among the 197 OBI-negative cases, 91 (46.2%) had NASH and 106 (53.8%) NAFL (P = .0002). Multivariate analysis showed that older age (P = .03, OR 1.034), alanine aminotransferase values (P = .005, OR 1.023), insulin resistance/diabetes (P = .02, OR 2.257), TM6SF2 polymorphism (P = .04, OR 3.168) and OBI (P = .004, OR 5.503) were independent predictors of NASH. CONCLUSION: NASH is highly prevalent in obese individuals undergoing bariatric surgery. OBI is one of the strongest risk factors of NASH in these patients.

No Coil® placement in patients undergoing left hemicolectomy and low anterior resection for colorectal cancer.

BACKGROUND: Colorectal cancer (CRC) is the most common tumor of the gastrointestinal tract. Anastomotic leak (AL) and prolonged postoperative ileus (PPOI) are two important complications of colorectal surgery. In this observational retrospective study, we evaluated the positive effects of transanal tube No Coil® in patients with CRC undergoing low anterior resection (LAR) and left hemicolectomy (LC). METHODS: Thirty-eight cases and forty controls resulted eligible for the final sample. No Coil® placement (SapiMed Spa, Alessandria, Italy) was considered an inclusion criteria for the case group. No Coil® was placed immediately after the end of surgical treatment. RESULTS: PPOI was significantly more frequent in the control group. AL was evident in 1 patient (2.6%) of cases and 3 patients (7.5%) of controls. No statistical difference was found in AL occurrence between groups. POI days and AL resulted associated with hospital stay. POI days were negatively associated with No Coil placement and positively with AL. CONCLUSION: With our preliminary data, we suggest that No Coil® placement can be considered as a valuable procedure assisting colorectal surgery, but further studies are required to confirm and enlarge actual evidence.

Colectomy and health-related quality of life in children with ulcerative colitis.

BACKGROUND: Restorative proctocolectomy and ileal pouch-anal anastomosis (IPAA) is the recommended elective surgery for children with ulcerative colitis (UC). The aim of this study was to evaluate functional and long-term health-related quality of life (HRQoL) outcomes of surgery in paediatric patients with UC. METHODS: We reviewed the hospital records of all paediatric patients who had undergone surgery for UC between January 2009 and December 2016 in the Units of Paediatric Gastroenterology and Surgery, of both the University Hospital of Messina, and the Gaslini Children's Hospital of Genoa. Surgical treatment was represented by restorative proctocolectomy and laparoscopic IPAA. Patients and parents were interviewed by telephone before and after surgery and responded to the modified IMPACT III questionnaire about health outcomes and HRQoL. The questionnaire was scored on a five-point scale with higher scores indicating a better HRQoL. The total score ranged from 35 (worst HRQoL) to 175 (best HRQoL). RESULTS: Data were obtained in 30 patients (16 males), with a median age of 12 (range 3- 16). The median amount of time elapsed after the operation was 3 years (range 1-4.5). Preoperative scores were very low in all 4 domains of the questionnaire. Postoperatively, HRQoL measures improved significantly (p<0.05), on symptoms, school attendance, social activities, and emotional aspects. Overall, nearly all were completely satisfied with the outcome of surgery. CONCLUSIONS: Our data confirmed that surgical treatment improves the overall HRQoL in paediatric patients with UC.

Favorable Management of Low Colorectal Anastomotic Leakage with Transanal Conventional and Endoscopic Drainage (GelPOINT® Path Transanal Access Platform).

OBJECTIVE: We describe our experience with transanal-laparoscopic treatment of anastomotic leakage. SUMMARY OF BACKGROUND DATA: Anastomotic leakage leads to high mortality rates, morbidity, a complicated post-operative course and increased cost. The management of low anastomotic leakage after anterior resection of rectal cancer is not standardized. METHODS: This was a retrospective cohort study based on prospectively collected data. Among patients who underwent anterior resection for rectal cancer in our division between January 2014 and October 2017, 14 developed colorectal or colo-anal anastomotic leakage and underwent reoperation with a transanal approach. Data regarding patient demographics, reoperative outcomes, morbidity, length of hospital stay, mortality, leak closure and long-term outcomes are presented. RESULTS: In all patients, anastomotic healing was confirmed by radiology. No perioperative complications were detected. One patient presented anastomotic stricture after 20 months, which was successfully treated with dilatation. CONCLUSIONS: There is little information available on the management of anastomotic leakage after anterior resection for rectal cancer. Although more studies are needed to standardize patient selection criteria and evaluate the long-term outcome of these procedures, minimally invasive transanal conventional and laparoscopic anastomotic leak repair is a feasible and safe surgical option that can often avoid the need for anastomotic takedown and stoma formation.

Management of Staple Line Leaks Following Laparoscopic Sleeve Gastrectomy for Morbid Obesity.

PURPOSES: Management of staple-line leaks following laparoscopic sleeve gastrectomy (LSG) is challenging and controversial. Guidelines for leak treatment are not standardized and often involve multidisciplinary management by surgical, medical and radiological methods. Herein we present our experience and proposed strategy for handling leaks after LSG. PATIENTS AND METHODS: Retrospective data regarding LSG performed from April 2012 to October 2017 at the Surgical Oncology Division, Department of Human Pathology in Adulthood and Childhood ''G. Barresi'', University Hospital "G. Martino", University of Messina, Italy, were reviewed. The management approaches and the surgical, endoscopic, and percutaneous procedures used were examined. Outcomes measured included the prevalence of gastric leaks, radiological features, related morbidities and mortalities, hospital stay and management. RESULTS: LSG was performed in 310 patients. Eight patients were managed for gastric leak within the 5-year period: 5 (1.6% overall prevalence) from our division, 3 referred from another hospital. All cases were successfully treated conservatively with combined CT/US-guided drainage using a locking pigtail catheter and endoscopic gastric stent positioning. Endoscopic therapy included the use of fully covered self-expanding esophageal metal stents (Hanarostent® 24 cm; M.I. Tech, Seoul, Korea) in addition to pigtail drains (Drainage Catheter Locking Pigtail 8F/21cm; Tru-Set® Ure-Sil, Skokie, IL, USA). Complete closure of the leak was achieved in all patients. The mean time from presentation to healing was 74 days ± 37.76 (SD). None of the patients underwent remedial surgery. CONCLUSION: This study presents our management strategy for leak resolution in LSG patients. Based on our results, we strongly recommend the conservative and combined management of gastric leaks following LSG by endoscopic stenting and percutaneous drainage.

Multi-port versus single-port cholecystectomy: results of a multi-centre, randomised controlled trial (MUSIC trial).

BACKGROUND: Single-port laparoscopic surgery as an alternative to conventional laparoscopic cholecystectomy for benign disease has not yet been accepted as a standard procedure. The aim of the multi-port versus single-port cholecystectomy trial was to compare morbidity rates after single-access (SPC) and standard laparoscopy (MPC). METHODS: This non-inferiority phase 3 trial was conducted at 20 hospital surgical departments in six countries. At each centre, patients were randomly assigned to undergo either SPC or MPC. The primary outcome was overall morbidity within 60 days after surgery. Analysis was by intention to treat. The study was registered with ClinicalTrials.gov (NCT01104727). RESULTS: The study was conducted between April 2011 and May 2015. A total of 600 patients were randomly assigned to receive either SPC (n = 297) or MPC (n = 303) and were eligible for data analysis. Postsurgical complications within 60 days were recorded in 13 patients (4.7 %) in the SPC group and in 16 (6.1 %) in the MPC group (P = 0.468); however, single-access procedures took longer [70 min (range 25-265) vs. 55 min (range 22-185); P < 0.001]. There were no significant differences in hospital length of stay or pain VAS scores between the two groups. An incisional hernia developed within 1 year in six patients in the SPC group and in three in the MPC group (P = 0.331). Patients were more satisfied with aesthetic results after SPC, whereas surgeons rated the aesthetic results higher after MPC. No difference in quality of life scores, as measured by the gastrointestinal quality of life index at 60 days after surgery, was observed between the two groups. CONCLUSIONS: In selected patients undergoing cholecystectomy for benign gallbladder disease, SPC is non-inferior to MPC in terms of safety but it entails a longer operative time. Possible concerns about a higher risk of incisional hernia following SPC do not appear to be justified. Patient satisfaction with aesthetic results was greater after SPC than after MPC.

CD56(bright)perforin(low) noncytotoxic human NK cells are abundant in both healthy and neoplastic solid tissues and recirculate to secondary lymphoid organs via afferent lymph.

As limited information is available regarding the distribution and trafficking of NK cells among solid organs, we have analyzed a wide array of tissues derived from different human compartments. NK cells were widely distributed in most solid tissues, although their amount varied significantly depending on the tissue/organ analyzed. Interestingly, the distribution appeared to be subset specific, as some tissues were preferentially populated by CD56(bright)perforin(low) NK cells, with others by the CD56(dim)perforin(high) cytotoxic counterpart. Nevertheless, most tissues were highly enriched in CD56(bright)perforin(low) cells, and the distribution of NK subsets appeared in accordance with tissue gene expression of chemotactic factors, for which receptors are differently represented in the two subsets. Remarkably, chemokine expression pattern of tissues was modified after neoplastic transformation. As a result, although the total amount of NK cells infiltrating the tissues did not significantly change upon malignant transformation, the relative proportion of NK subsets infiltrating the tissues was different, with a trend toward a tumor-infiltrating NK population enriched in noncytotoxic cells. Besides solid tissues, CD56(bright)perforin(low) NK cells were also detected in seroma fluids, which represents an accrual of human afferent lymph, indicating that they may leave peripheral solid tissues and recirculate to secondary lymphoid organs via lymphatic vessels. Our results provide a comprehensive mapping of NK cells in human tissues, demonstrating that discrete NK subsets populate and recirculate through most human tissues and that organ-specific chemokine expression patterns might affect their distribution. In this context, chemokine switch upon neoplastic transformation might represent a novel mechanism of tumor immune escape.

Membrane transfer from tumor cells overcomes deficient phagocytic ability of plasmacytoid dendritic cells for the acquisition and presentation of tumor antigens.

The potential contribution of plasmacytoid dendritic cells (pDCs) in the presentation of tumor cell Ags remains unclear, and some controversies exist with regard to the ability of pDCs to phagocytose cell-derived particulate Ags and cross-present them to MHC class I-restricted T lymphocytes. In this study, we show that human pDCs, although inefficient in the internalization of cell membrane fragments by phagocytosis, can efficiently acquire membrane patches and associated molecules from cancer cells of different histotypes. The transfer of membrane patches to pDCs occurred in a very short time and required cell-to-cell contact. Membrane transfer also included intact HLA complexes, and the acquired Ags could be efficiently recognized on pDCs by tumor-specific CD8(+) T cells. Remarkably, pDCs isolated from human colon cancer tissues displayed a strong surface expression of epithelial cell adhesion molecule, indicating that the exchange of exogenous Ags between pDCs and tumor cells also can occur in vivo. These data demonstrate that pDCs are well suited to acquire membrane patches from contiguous tumor cells by a cell-to-cell contact-dependent mechanism that closely resembles "trogocytosis." This phenomenon may allow pDCs to proficiently present tumor cell-derived Ags, despite limited properties of endophagocytosis.

Hepatitis B virus (HBV) DNA integration in patients with occult HBV infection and hepatocellular carcinoma.

BACKGROUND & AIMS: Hepatitis B virus (HBV) DNA integration in the host genome is a major mechanism responsible for the etiopathogenetic role exerted by HBV in hepatocellular carcinoma (HCC) development. Extensive analyses evaluating viral integration in HBV surface antigen (HBsAg) negative patients with occult HBV infection (OBI) have not yet been performed. The aim of this study was to investigate and characterize HBV DNA integration in HCC tissues from OBI patients. METHODS: Tumour DNA extracts from 69 HCC patients (49 HBsAg-negative with occult infection diagnosed by HBV DNA detection in tumour tissues; 10 HBsAg-positive and 10 HBsAg-negative/OBI-negative as control groups) were examined by Alu-PCR technique to reveal HBV DNA integration into the host genome. The molecular characterization of the virus-genome junctions was performed by cloning and sequencing analyses. RESULTS: Integrated HBV DNA was detected in 37/49 (75.5%) OBI-positive HCC samples, in 8/10 (80%) HBsAg-positive and in 0/10 OBI-negative HCC samples. Nine of 37 (24.3%) integrated viral sequences from OBI-positive cases were inside human genome coding regions and in the remaining cases the localization at intergenic level was frequently adjacent to coding genes. Concerning viral integrants in OBI cases, X gene sequences were found in 14 cases, preS/S sequences in 13, Core sequences in 7, and Polymerase gene sequences in three cases. CONCLUSIONS: In analogy to what occurs in HBsAg-positive cases, HBV DNA integration is highly prevalent in OBI-related HCCs, it mainly involves X and preS/S viral genomic regions and it frequently occurs at the level of regulatory and functional genes.

Advancements in Bariatric Surgery: A Comparative Review of Laparoscopic and Robotic Techniques.

This article examines the evolution of bariatric surgery, with a focus on emerging technologies such as robotics and laparoscopy. In the case of gastric bypass, no significant differences have emerged between the two techniques in terms of hospitalization duration, weight loss, weight regain, or 30-day mortality. Robotic surgery, while requiring more time in the operating room, has been associated with lower rates of bleeding, mortality, transfusions, and infections. In revisional bariatric surgery, the robotic approach has shown fewer complications, shorter hospital stays, and a reduced need for conversion to open surgery. In the case of sleeve gastrectomy, robotic procedures have required more time and longer postoperative stays but have recorded lower rates of transfusions and bleeding compared to laparoscopy. However, robotic surgeries have proven to be more costly and potentially more complex in terms of postoperative complications. The review has also addressed the topic of the single-anastomosis duodeno-ileal switch (SADIS), finding comparable results between robotic and laparoscopic techniques, although robotic procedures have required more time in the operating room. Robotic technology has proven to be safe and effective, albeit with slightly longer operative times in some cases.

Microbiota and plasticity of antigen-presenting ILC3s: impact on antitumor immune response.

Growing evidence highlights the pivotal role of RORγt-innate lymphoid cells (ILCs) in the establishment of antitumor immune response and in enhancing tumor sensitivity to immunotherapy. Noteworthy, type 3 ILCs (ILC3s) have been recently acknowledged as an important class of antigen-presenting cells (APCs) in the context of host-microorganism interactions shaping the adaptive immune response in the intestinal mucosa. Although a broad range of mouse models has led to significant progress in untangling the role of ILC3s as APCs, the outcome of major histocompatibility complex (MHC)-dependent ILC-T cell crosstalk in colorectal cancer (CRC) remains underexplored in human. Moreover, expression of MHCII is confined to ILC3 subset, endowed with lymphoid tissue-inducing properties, that adopts tissue-specific fates and functions. Intestinal microbiota could dictate the plasticity of antigen-presenting ILC3s and we here summarize our current understanding of the functions of these cells in both mouse and human CRC discussing the role of microbiota as a key modulator of their tumor-suppressive activity.