Fashioning esophagogastric anastomosis in robotic Ivor-Lewis esophagectomy: a multicenter experience.

BACKGROUND: The aim of the present study is to compare outcomes of the robotic hand-sewn, linear- and circular-stapled techniques performed to create an intrathoracic esophagogastric anastomosis in patients who underwent Ivor-Lewis esophagectomy. METHODS: Patients who underwent a planned Ivor-Lewis esophagectomy were retrospectively analysed from prospectively maintained databases. Only patients who underwent a robotic thoracic approach with the creation of an intrathoracic esophagogastric anastomosis were included in the study. Patients were divided into three groups: hand-sewn-, circular stapled-, and linear-stapled anastomosis group. Demographic information and surgery-related data were extracted. The primary outcome was the rate of anastomotic leakages (AL) in the three groups. Moreover, the rate of grade A, B and C anastomotic leakage were evaluated. In addition, patients of each group were divided in subgroups according to the characteristics of anastomotic fashioning technique. RESULTS: Two hundred and thirty patients were enrolled in the study. No significant differences were found between the three groups about AL rate (p = 0.137). Considering the management of the AL for each of the three groups, no significant differences were found. Evaluating the correlation between AL rate and the characteristics of anastomotic fashioning technique, no significant differences were found. CONCLUSIONS: No standardized anastomotic fashioning technique has yet been generally accepted. This study could be considered a call to perform ad hoc high-quality studies involving high-volume centers for upper gastrointestinal surgery to evaluate what is the most advantageous anastomotic technique.

Surgical treatment of recurrent retroperitoneal sarcoma in its different patterns: A 15-years' two-centers experience.

INTRODUCTION: There is limited data available regarding the role of surgery in the treatment of retroperitoneal sarcoma (RPS) recurrences. We herein report the short- and mid-term outcomes of patients who underwent surgical treatment of RPS recurrences at two Italian centers over a 15-years' experience. MATERIALS AND METHODS: From January 2005 to January 2020, 33 patients underwent surgical treatment of isolated locally recurrent RPS (LR group), locally recurrent RPS associated with the presence of distant recurrence (LR + DM group), and distant-only recurrent RPS (DM group). Only procedures performed to obtain a macroscopically radical treatment with curative intent were included. Data regarding pre-, intra-, post-operative course, and follow-up, collected in an Institutional database, were retrospectively analyzed, and compared. RESULTS: LR-group was composed of 15 patients, LR + DM group of 9 patients, and DM group of 9 patients. During the follow-up, 78.5% of the LR group, 77.8% of the DM group and 100% of the LR + DM group (p = 0.244) experienced a second recurrence. 7/11 (63.6%) patients in the LR group, 2/7 (28.5%) patients in the DM-group, and 0/9 (0.0%) patients in the LR + DM group underwent to almost one further local treatments of their recurrences (p = 0.010). No differences in the mean disease-free survival (p = 0.127), overall survival (OS) (p = 0.165) was reported among the three groups. Repeated surgery was an independent factor affecting survival in multivariate analysis (p = 0.01). CONCLUSIONS: A surgical treatment of RPS recurrences should always be taken into consideration, also in metastatic patients and/or in those who have already undergone surgery for previous RPS recurrence, because this approach may offer survival benefits.

Three-D-printed simulator for kidney transplantation.

BACKGROUND: Three-Dimensional (3D) printing technology can be used to manufacture training platforms for surgeons. Kidney transplantation offers a suitable model, since it mostly entails vascular and ureteric anastomoses. METHODS: A new simulation platform for surgical training in kidney transplantation was realized and validated in this study. A combination of different 3-D printing technology was used to reproduce the key anatomy of lower abdomen, of pelvis, and of a kidney graft, including their mechanical properties. RESULTS: Thirty transplantations were performed by two junior trainees with no previous experience in the area. Analysis of the times required to perform the simulated transplantation showed that proficiency was reached after about ten cases, as indicated by a flattening of the respective curves that corresponded to a shortening of about 40% and 47%, respectively, of the total time initially needed to perform the whole simulated transplantation. Although an objective assessment of the technical quality of the anastomoses failed to show a significant improvement throughout the study, a growth in self-confidence with the procedure was reported by both trainees. CONCLUSION: The quality of the presented simulation platform aimed at reproducing in the highest possible way a realistic model of the operative setting and proved effective in providing an integrated training environment where technical skills are enhanced together with a team-training experience. As a result the trainees' self-confidence with the procedure resulted enforced. Three-D--printed models can also offer pre-operative patient-specific training when anatomical variants are anticipated by medical imaging. An analysis of the costs related to the use of this platform is also provided and discussed.

Minimally invasive distal pancreatectomy: a case-matched cost-analysis between robot-assisted surgery and direct manual laparoscopy.

BACKGROUND: Few studies have reported a structured cost analysis of robotic distal pancreatectomy (RDP), and none have compared the relative costs between the robotic-assisted surgery (RAS) and the direct manual laparoscopy (DML) in this setting. The aim of the present study is to address this issue by comparing surgical outcomes and costs of RDP and laparoscopic distal pancreatectomies (LDP). METHODS: Eighty-eight RDP and 47 LDP performed between January 2008 and January 2020 were retrospectively analyzed. Three comparable groups of 35 patients each (Si-RDP-group, Xi-RDP group, LDP-group) were obtained matching 1:1 the RDP-groups with the LDP-group. Overall costs, including overall variable costs (OVC) and fixed costs were compared using generalized linear regression model adjusting for covariates. RESULTS: The conversion rate was significantly lower in the Si-RDP-group and Xi-RDP-group: 2.9% and 0%, respectively, versus 14.3% in the LDP-group (p = 0.045). Although not statistically significant, the mean operative time was lower in Xi-RDP-group: 226 min versus 262 min for Si-RDP-group and 247 min for LDP-group. The overall post-operative complications rate and the length of hospital stay (LOS) were not significantly different between the three groups. In LDP-group, the LOS of converted cases was significantly longer: 15.6 versus 9.8 days (p = 0.039). Overall costs of LDP-group were significantly lower than RDP-groups, (p < 0.001). At multivariate analysis OVC resulted no longer statistically significantly different between LDP-group and Xi-RDP-group (p = 0.099), and between LDP-group and the RDP-groups when the spleen preservation was indicated (p = 0.115 and p = 0.261 for Si-RDP-group and Xi-RDP-group, respectively). CONCLUSIONS: RAS is more expensive than DML for DP because of higher acquisition and maintenance costs. The flattening of these differences considering only the variable costs, in a high-volume multidisciplinary center for RAS, suggests a possible optimization of the costs in this setting. RAS might be particularly indicated for minimally invasive DP when the spleen preservation is scheduled.

Impact of COVID-19 outbreak on esophageal cancer surgery in Northern Italy: lessons learned from a multicentric snapshot.

Coronavirus Disease-19 (COVID-19) outbreak has significantly burdened healthcare systems worldwide, leading to reorganization of healthcare services and reallocation of resources. The Italian Society for Study of Esophageal Diseases (SISME) conducted a national survey to evaluate changes in esophageal cancer management in a region severely struck by COVID-19 pandemic. A web-based questionnaire (26 items) was sent to 12 SISME units. Short-term outcomes of esophageal resections performed during the lockdown were compared with those achieved in the same period of 2019. Six (50%) centers had significant restrictions in their activity. However, overall number of resections did not decrease compared to 2019, while a higher rate of open esophageal resections was observed (40 vs. 21.7%; P = 0.034). Surgery was delayed in 24 (36.9%) patients in 6 (50%) centers, mostly due to shortage of anesthesiologists, and occupation of intensive care unit beds from intubated COVID-19 patients. Indications for neoadjuvant chemo (radio) therapy were extended in 14% of patients. Separate COVID-19 hospital pathways were active in 11 (91.7%) units. COVID-19 screening protocols included nasopharyngeal swab in 91.7%, chest computed tomography scan in 8.3% and selective use of lung ultrasound in 75% of units. Postoperative interstitial pneumonia occurred in 1 (1.5%) patient. Recovery from COVID-19 pandemic was characterized by screening of patients in all units, and follow-up outpatient visits in only 33% of units. This survey shows that clinical strategies differed considerably among the 12 SISME centers. Evidence-based guidelines are needed to support the surgical esophageal community and to standardize clinical practice in case of further pandemics.

An overview on 3D printing for abdominal surgery.

BACKGROUND: Three-dimensional (3D) printing is a disruptive technology that is quickly spreading to many fields, including healthcare. In this context, it allows the creation of graspable, patient-specific, anatomical models generated from medical images. The ability to hold and show a physical object speeds up and facilitates the understanding of anatomical details, eases patient counseling and contributes to the education and training of students and residents. Several medical specialties are currently exploring the potential of this technology, including general surgery. METHODS: In this review, we provide an overview on the available 3D printing technologies, together with a systematic analysis of the medical literature dedicated to its application for abdominal surgery. Our experience with the first clinical laboratory for 3D printing in Italy is also reported. RESULTS: There was a tenfold increase in the number of publications per year over the last decade. About 70% of these papers focused on kidney and liver models, produced primarily for pre-interventional planning, as well as for educational and training purposes. The most used printing technologies are material jetting and material extrusion. Seventy-three percent of publications reported on fewer than ten clinical cases. CONCLUSION: The increasing application of 3D printing in abdominal surgery reflects the dawn of a new technology, although it is still in its infancy. The potential benefit of this technology is clear, however, and it may soon lead to the development of new hospital facilities to improve surgical training, research, and patient care.

Robotic Treatment of Complex Splenic Artery Aneurysms with Deep Hilar Location: Technical Insights and Midterm Results.

BACKGROUND: Splenic artery aneurysms are rare, but their occurrence is burdened by considerable mortality and morbidity rates. Although the indications to treatment are quite clear-cut, there is still debate on the first-choice technique of treatment (endovascular, open, or laparoscopic surgery). Recently, robotic surgery has been proposed as an alternative option in patients at high surgical risk. The present case series aims to assess the value of robotic treatment of splenic artery aneurysms in patients unfit for surgery. METHODS: All cases of splenic artery aneurysms treated by robotic surgery at our center between 2014 and 2018 were retrospectively reviewed. Primary endpoints were clinical and technical success and disease-free survival. RESULTS: Robotic surgery was used to treat four patients affected by splenic artery aneurysms, with the guidance of 3D printed patient-specific models. All patients, after aneurysm excision, received reconstruction of the splenic artery by direct anastomosis. All cases were treated successfully without mortality. Reintervention-free survival at 24-month mean follow-up is 100%, and no systemic complication of clinical relevance was reported. The mean time of organ ischemia was 45 min. CONCLUSIONS: Robotic surgery is a safe and effective option in treating visceral aneurysms, providing the possibility to reconstruct the splenic artery after aneurysm excision.

Full Robotic Distal Pancreatectomy: Safety and Feasibility Analysis of a Multicenter Cohort of 236 Patients.

Introduction. Despite the widespread use of the robotic technology, only a few studies with small sample sizes report its application to pancreatic diseases treatment. Our aim is to present the results of a multicenter study on the safety and feasibility of robot-assisted distal pancreatectomy (RDP). Materials and Methods. All RDPs for benign, borderline, and malignant diseases performed in 5 referral centers from 2008 to 2016 were included. Perioperative outcomes were evaluated. Results. Two hundred thirty-six patients were included. Spleen preservation was performed in 114 cases (48.3%). Operative time was 277.8 ± 93.6 minutes. Progressive improvement in operative time was observed over the study period. Conversion rate was 6.3%. Morbidity occurred in 102 cases (43.2%), mainly due to grade A fistulas. Reoperation was required in 10 patients. Postoperatively, 2 patients died of sepsis due to a grade C fistula. Hospital readmission was necessary in 11 cases. A R0 resection was always achieved, with a mean number of 16.2 ± 15 harvested lymph nodes. Conclusion. To our knowledge, this is one of the largest RDP series. Safety and feasibility including the low conversion rate, the high spleen preservation rate, the adequate operative time, and the acceptable morbidity and mortality rates confirm the validity of this technique. Appropriate oncological outcomes have been also obtained.

Short-term and long-term outcomes after robot-assisted versus laparoscopic distal pancreatectomy for pancreatic neuroendocrine tumors (pNETs): a multicenter comparative study.

PURPOSE: Minimally invasive surgery has increasingly gained popularity as a treatment of choice for pancreatectomy with encouraging initial results in robotic distal pancreatectomy (RDP). However, few data are available on the comparison between RDP and laparoscopic distal pancreatectomy (LDP) for pancreatic neuroendocrine tumors (pNETs). Our aim, thus, is to compare perioperative and long-term outcomes as well as total costs of RDP and LDP for pNETs. METHODS: All RDPs and LDPs for pNETs performed in four referral centers from 2008 to 2016 were included. Perioperative outcomes, histopathological results, overall (OS) and disease-free survival (DFS), and total costs were evaluated. RESULTS: Ninety-six RDPs and 85 LDPs were included. Demographic and clinical characteristics were comparable between the two cohorts. Operative time was 36.5 min longer in the RDP group (p = 0.009) but comparable to LDP after removing the docking time (247.9 vs 233.7 min; p = 0.6). LDP related to a lower spleen preservation rate (44.7% vs 65.3%; p < 0.0001) and higher blood loss (239.7 ± 112 vs 162.5 ± 98 cc; p < 0.0001). Advantages in operative time for RDP were documented in case of the spleen preservation procedures (265 ± 41.52 vs 291 ± 23 min; p = 0.04). Conversion rate, postoperative morbidity, and pancreatic fistula rate were similar between the two groups, as well as histopathological data, OS, and DFS. Significant advantages were evidenced for LDP regarding mean total costs (9235 (± 1935) € vs 11,226 (± 2365) €; p < 0.0001). CONCLUSIONS: Both RDP and LDP are safe and efficacious for pNETs treatment. However, RDP offers advantages with a higher spleen preservation rate and lower blood loss. Costs still remain the main limitation of the robotic approach.

Value of 3D printing for the comprehension of surgical anatomy.

BACKGROUND: In a preliminary experience, we claimed the potential value of 3D printing technology for pre-operative counseling and surgical planning. However, no objective analysis has ever assessed its additional benefit in transferring anatomical information from radiology to final users. We decided to validate the pre-operative use of 3D-printed anatomical models in patients with solid organs' diseases as a new tool to deliver morphological information. METHODS: Fifteen patients scheduled for laparoscopic splenectomy, nephrectomy, or pancreatectomy were selected and, for each, a full-size 3D virtual anatomical object was reconstructed from a contrast-enhanced MDCT (Multiple Detector Computed Tomography) and then prototyped using a 3D printer. After having carefully evaluated-in a random sequence-conventional contrast MDCT scans, virtual 3D reconstructions on a flat monitor, and 3D-printed models of the same anatomy for each selected case, thirty subjects with different expertise in radiological imaging (10 medical students, 10 surgeons and 10 radiologists) were administered a multiple-item questionnaire. Crucial issues for the anatomical understanding and the pre-operative planning of the scheduled procedure were addressed. RESULTS: The visual and tactile inspection of 3D models allowed the best anatomical understanding, with faster and clearer comprehension of the surgical anatomy. As expected, less experienced medical students perceived the highest benefit (53.9% ± 4.14 of correct answers with 3D-printed models, compared to 53.4 % ± 4.6 with virtual models and 45.5% ± 4.6 with MDCT), followed by surgeons and radiologists. The average time spent by participants in 3D model assessing was shorter (60.67 ± 25.5 s) than the one of the corresponding virtual 3D reconstruction (70.8 ± 28.18 s) or conventional MDCT scan (127.04 ± 35.91 s). CONCLUSIONS: 3D-printed models help to transfer complex anatomical information to clinicians, resulting useful in the pre-operative planning, for intra-operative navigation and for surgical training purposes.

Short-term outcomes of single-site robotic cholecystectomy versus four-port laparoscopic cholecystectomy: a prospective, randomized, double-blind trial.

BACKGROUND: Randomized studies could not demonstrate significant outcome benefit after single-incision laparoscopic cholecystectomy compared to classic four-port laparoscopic cholecystectomy (CLC). The new robotic single-site platform might offer potential benefits on local inflammation and postoperative pain due to its technological advantages. This prospective randomized double-blind trial compared the short-term outcomes between single-incision robotic cholecystectomy (SIRC) and CLC. METHODS: Two groups of 30 eligible patients were randomized for SIRC or CLC. During the first postoperative week, patients and study monitors were blinded to the type of procedure performed by four dressing tapes applied on the abdomen. Pain was assessed at 6 h and on day 1, 7 and 30 after surgery, along with a 1-10 cosmetic score. RESULTS: No significant difference in postoperative pain occurred in the two groups at any time point nor for any of the abdominal sites. Nineteen (63 %) SIRC patients reported early postoperative pain in extra-umbilical sites. Intraoperative complications which might influence postoperative pain, such as minor bleeding and bile spillage, were similar in both groups and no conversions occurred. The cosmetic score 1 month postoperatively was higher for SIRC (p < 0.001). Two SIRC patients had wound infection, one of which developed an incisional hernia. CONCLUSIONS: SIRC does not offer any significant reduction of postoperative pain compared to CLC. SIRC patients unaware of their type of operation still report pain in extra-umbilical sites like after CLC. The cosmetic advantage of SIRC should be balanced against an increased risk of incisional hernias and higher costs. TRIAL REGISTRATION NUMBER: ACTRN12614000119695 ( http://www.anzctr.org.au ).

From CT scanning to 3-D printing technology for the preoperative planning in laparoscopic splenectomy.

BACKGROUND: Three-dimensional printing technology is rapidly changing the way we produce all sort of objects, having also included medical applications. We embarked in a pilot study to assess the value of patient-specific 3-D physical manufacturing of spleno-pancreatic anatomy in helping during patient's counseling and for preoperative planning. METHODS: Twelve patients scheduled for a laparoscopic splenectomy underwent contrast CT and subsequent post-processing to create virtual 3-D models of the target anatomy, and 3-D printing of the relative solid objects. The printing process, its cost and encountered problems were monitored and recorded. Patients were asked to rate the value of 3-D objects on a 1-5 scale in facilitating their understanding of the proposed procedure. Also 10 surgical residents were required to evaluate the perceived extra value of 3-D printing in the preoperative planning process. RESULTS: The post-processing analysis required an average of 2; 20 h was needed to physically print each model and 4 additional hours to finalize each object. The cost for the material employed for each object was around 300 euros. Ten patients gave a score of 5, two a score of 4. Six residents gave a score of 5, four a score of 4. CONCLUSIONS: Three-dimensional printing is helpful in understanding complex anatomy for educational purposes at all levels. Cost and working time to produce good quality objects are still considerable.

Ethical Issues in Living Donor Kidney Transplantation: An Update from a Psychosocial Perspective.

Living donor kidney transplantation (LDKT) currently represents the treatment of choice for patients with end-stage renal failure. LDKT is a serious event with profound psychological, interpersonal, familial, and social implications. Over the last few years, there has been an exponential growth in living donation programs involving genetically and emotionally related donors, as well as people who donate to an unrelated and unknown subject. The implementation of paired exchange programs, Samaritan donation, and preemptive transplantation raise further ethical issues, which are inextricably linked to the unique psychosocial context of both the donor and the recipient. The present narrative review aims to provide an update on the main ethical challenges related to LDKT. We conducted a comprehensive literature search in PubMed/Medline. The results of the most relevant studies were narratively synthesized from a psychosocial perspective around the four principles of biomedical ethics: autonomy, beneficence, non-maleficence, and justice. Finally, we discussed the potential future directions to provide an effective, patient-centered, and ethical psychosocial assessment and follow-up of living donors and recipients that underwent LDKT.

Ethics of Bariatric Surgery in Adolescence and Its Implications for Clinical Practice.

Obesity is increasingly prevalent among adolescents. Clinical and research data support the use of bariatric surgery (BS) as a treatment option for severely obese adolescents, with good results in terms of weight loss, improvement or resolution of comorbidities, and compliance to follow up. Nevertheless, concerns still remain, with significant disparities among countries and ethical concerns mainly raised by performing an irreversible and invasive procedure in adolescence, with potential life-long alterations. In this context, the purpose of this narrative review was to discuss the main current ethical challenges in performing BS in adolescence and to inform appropriate clinical management in the field. The core ethical principles of autonomy, beneficence, nonmaleficence, and justice were revised in terms of patient-centered healthcare through the lens of psychosocial implications. The review concludes with a discussion regarding the potential directives for future research for effective, patient-centered, and ethical management of obesity in the adolescent population.

Dynamic NLR and PLR in Predicting COVID-19 Severity: A Retrospective Cohort Study.

INTRODUCTION: The hyperinflammation phase of severe SARS-CoV-2 is characterised by complete blood count alterations. In this context, the neutrophil-to-lymphocyte ratio (NLR) and the platelet-to-lymphocyte ratio (PLR) can be used as prognostic factors. We studied NLR and PLR trends at different timepoints and computed optimal cutoffs to predict four outcomes: use of continuous positive airways pressure (CPAP), intensive care unit (ICU) admission, invasive ventilation and death. METHODS: We retrospectively included all adult patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pneumonia admitted from 23 January 2020 to 18 May 2021. Analyses included non-parametric tests to study the ability of NLR and PLR to distinguish the patients' outcomes at each timepoint. Receiver operating characteristic (ROC) curves were built for NLR and PLR at each timepoint (minus discharge) to identify cutoffs to distinguish severe and non-severe disease. Their statistical significance was assessed with the chi-square test. Collection of data under the SMACORE database was approved with protocol number 20200046877. RESULTS: We included 2169 patients. NLR and PLR were higher in severe coronavirus disease 2019 (COVID-19). Both ratios were able to distinguish the outcomes at each timepoint. For NLR, the areas under the receiver operating characteristic curve (AUROC) ranged between 0.59 and 0.81, and for PLR between 0.53 and 0.67. From each ROC curve we computed an optimal cutoff value. CONCLUSION: NLR and PLR cutoffs are able to distinguish severity grades and mortality at different timepoints during the course of disease, and, as such, they allow a tailored approach. Future prospects include validating our cutoffs in a prospective cohort and comparing their performance against other COVID-19 scores.

Case Report: Two Is Not (Always) Better Than One: Pyloric Gland Adenoma of the Gastric Cardia and Concurrent Neuroendocrine Cell Dysplasia Arising From Autoimmune Gastritis.

Autoimmune gastritis is a chronic immune-mediated disorder characterized by varied clinical manifestations and that should be endoscopically managed over time, as the gastric atrophy contributes to microenvironmental alterations of the stomach milieu, and an increased cancer risk has been linked to this condition. Here, we report the unusual case of a woman who developed a cardiac high-grade pyloric adenoma in a context of previously undiagnosed autoimmune gastritis with synchronous neuroendocrine cell hyperplastic and dysplastic lesions.

Pattern of recurrence and survival after D2 right colectomy for cancer: is there place for a routine more extended lymphadenectomy?

BACKGROUND: Conventional Right Colectomy with D2 lymphadenectomy (RC-D2) currently represent the most common surgical treatment of right-sided colon cancer (RCC). However, whether it should be still considered a standard of care, or replaced by a routine more extended D3 lymphadenectomy remains unclear. In the present study, we aim to critically review the patterns of relapse and the survival outcomes obtained from our 11-year experience of RC-D2. METHODS: Clinical data of 489 patients who underwent RC-D2 for RCC at two centres, from January 2009 to January 2020, were retrospectively reviewed. Patients with synchronous distant metastases and/or widespread nodal involvement at diagnosis were excluded. Post-operative clinical-pathological characteristics and survival outcomes were evaluated including the pattern of disease relapse. RESULTS: We enrolled a total of 400 patients with information follow-up. Postoperative morbidity was 14%. The median follow-up was 62 months. Cancer recurrence was observed in 55 patients (13.8%). Among them, 40 patients (72.7%) developed systemic metastases, and lymph-node involvement was found in 7 cases (12.8%). None developed isolated central lymph-node metastasis (CLM), in the D3 site. The estimated 3- and 5-year relapse-free survival were 86.1% and 84.4%, respectively. The estimated 3- and 5-year cancer-specific OS were 94.5% and 92.2%, respectively. CONCLUSIONS: The absence of isolated CLM, as well as the cancer-specific OS reported in our series, support the routine use of RC-D2 for RCC. However, D3 lymphadenectomy may be recommended in selected patients, such as those with pre-operatively known CLM, or with lymph-node metastases close to the origin of the ileocolic vessels.

Clinical Impact of Stump Closure Reinforced With Hemopatch on the Prevention of Clinically Relevant Pancreatic Fistula After Distal Pancreatectomy: A Multicenter Randomized Trial.

Introduction: Postoperative pancreatic fistula (POPF) is the most dreaded complication after distal pancreatectomy (DP). This multicenter randomized trial evaluated the efficacy, safety, and tolerance of Hemopatch in preventing clinically relevant (grades B/C according to the ISGPS classification) POPF after DP. Material and methods: After stump closure, patients were randomized to affix Hemopatch to the stump or not. Statistical significance was set at 0.025. Clinical significance was defined as the number of patients needed to treat (NNT) to avoid 1 B/C POPF. Results: Of 631 eligible patients, 360 were randomized and 315 analyzed per protocol (155 in the standard closure group; 160 in the Hemopatch group). The rates of B/C POPF (the primary endpoint) were 23.2% and 16.3% (P = 0.120), while the number of patients with 1 or more complications (including patients with B/C POPF) was 34.8% and 24.4% (P = 0.049) in the standard and Hemopatch groups, respectively. In patients with hand-sewn stump and main duct closure, the rates were 26.2% versus 10.0% (P = 0.014) and 23.3% versus 7.7% (P = 0.015) in the standard and Hemopatch groups, respectively. The NNT in these 2 subgroups was 6 and 6.4, respectively. Conclusion: The results of the first randomized trial evaluating Hemopatch-reinforced pancreatic stump after DP to prevent type B/C POPF do not allow us to conclude that the risk of B/C POPF was lower. Based on the NNT, however, routine use of Hemopatch after DP may result in fewer complications (including POPF) overall, especially in cases with hand-sewn closure of the pancreatic stump or main pancreatic duct.

Mixed reality for robotic treatment of a splenic artery aneurysm.

BACKGROUND: Techniques of mixed reality can successfully be used in preoperative planning of laparoscopic and robotic procedures and to guide surgical dissection and enhance its accuracy. METHODS: A computer-generated three-dimensional (3D) model of the vascular anatomy of the spleen was obtained from the computed tomography (CT) dataset of a patient with a 3-cm splenic artery aneurysm. Using an environmental infrared localizer and a stereoscopic helmet, the surgeon can see the patient's anatomy in transparency (augmented or mixed reality). This arrangement simplifies correct positioning of trocars and locates surgical dissection directly on top of the aneurysm. In this way the surgeon limits unnecessary dissection, leaving intact the blood supply from the short gastric vessels and other collaterals. Based on preoperative planning, we were able to anticipate that the vascular exclusion of the aneurysm would result in partial splenic ischemia. To re-establish the flow to the spleen, end-to-end robotic anastomosis of the splenic artery with the Da Vinci surgical system was then performed. Finally, the aneurysm was fenestrated to exclude arterial refilling. RESULTS: The postoperative course was uneventful. A control CT scan 4 weeks after surgery showed a well-perfused and homogeneous splenic parenchyma. The final 3D model showed the fenestrated calcified aneurysm and patency of the re-anastomosed splenic artery. CONCLUSIONS: The described technique of robotic vascular exclusion of a splenic artery aneurysm, followed by re-anastomosis of the vessel, clearly demonstrates how this technology can reduce the invasiveness of the procedure, obviating an otherwise necessary splenectomy. Also, the use of intraoperative mixed-reality technology proved very useful in this case and is expected to play an increasing role in the operating room of the future.

FEESST in the rehabilitation of dysphagia after partial laryngectomy.

OBJECTIVES: We describe the role of the laryngeal adductor reflex (LAR) and fiberoptic endoscopic evaluation of swallowing with sensory testing (FEESST) in the rehabilitation of patients with oropharyngeal dysphagia after partial laryngectomy. METHODS: Ten patients with a mean age of 64 years (range, 45 to 72 years) were included in the study. Seven patients underwent supraglottic laryngectomy, and 3 had supracricoid laryngectomy. Six patients underwent additional radiotherapy (RT), and 8 had functional neck dissection (ND). FEESST was performed on each patient in order to establish a swallowing rehabilitation program. RESULTS: In 2 patients, not submitted to either ND or RT, the LAR was preserved; in 6 patients, who underwent both procedures, the LAR was delayed or absent. In 2 patients who underwent ND but not RT, the LAR was preserved in 1 case and delayed in the other. The patients with an absent LAR presented severe aspiration, whereas in those with a preserved LAR, no penetration was found. Moderate aspiration was found in the remaining patients. In the patients with a reduced or absent LAR, tactile and chemical sensory stimulation was added to the rehabilitation program. CONCLUSIONS: FEESST represents a useful tool in everyday clinical practice for the planning of swallowing rehabilitation after partial laryngectomy.