Risk factors for nodal involvement in early-stage rectal cancer: a new scoring system based on the analysis of 326 cases.

BACKGROUND: the purpose of this study was to identify which clinicopathological features of early-stage rectal cancer (ESRC) are significantly correlated with the risk of local-regional lymph node metastases (LNM) and to quantify the strength of this association through a novel scoring system. According to several case studies, about 20% of operated ESRC are found with occult lymph nodal metastases at the histological examination. The low frequency of local recurrence in these tumors treated with total mesorectal excision (TME) compared to transanal approaches highlights the role of mesorectal lymph nodes as a site of metastatic location. METHODS: Overall, 386 consecutive patients with ESRC treated with radical resection and TME were examined in a retrospective, observational multi-centric study, operated between 2007 and 2019 in seven centers. Demographic and tumor related clinicopathological characteristics were identified, collected and analyzed. Each variable was specifically weighted based on the strength of its association with the presence of nodal metastases. A scoring system using these weighted variables was developed. RESULTS: Six variables were found to be significantly associated with local regional LNM: lymphatic invasion combined with vascular invasion, poor differentiation (G3), stage T2, age ≥60 years, male sex, perineural invasion. A novel scoring system weighted on the presence of each of these variables able to quantify the risk of LNM in ESRC was developed. CONCLUSIONS: The proposed scoring system is a good predictor of the risk of LNM and should be of help in the decision-making process for ESRC cases diagnosed either by local excision or endoscopic biopsy.

ICG fluorescence imaging in colorectal surgery: a snapshot from the ICRAL study group.

BACKGROUND: Fluorescence-guided visualization is a recently proposed technology in colorectal surgery. Possible uses include evaluating perfusion, navigating lymph nodes and searching for hepatic metastases and peritoneal spread. Despite the absence of high-level evidence, this technique has gained considerable popularity among colorectal surgeons due to its significant reliability, safety, ease of use and relatively low cost. However, the actual use of this technique in daily clinical practice has not been reported to date. METHODS: This survey was conducted on April 2020 among 44 centers dealing with colorectal diseases and participating in the Italian ColoRectal Anastomotic Leakage (iCral) study group. Surgeons were approximately equally divided based on geographical criteria from multiple Italian regions, with a large proportion based in public (89.1%) and nonacademic (75.7%) centers. They were invited to answer an online survey to snapshot their current behaviors regarding the use of fluorescence-guided visualization in colorectal surgery. Questions regarding technological availability, indications and techniques, personal approaches and feelings were collected in a 23-item questionnaire. RESULTS: Questionnaire replies were received from 37 institutions and partially answered by 8, as this latter group of centers do not implement fluorescence technology (21.6%). Out of the remaining 29 centers (78,4%), fluorescence is utilized in all laparoscopic colorectal resections by 72.4% of surgeons and only for selected cases by the remaining 27.6%, while 62.1% of respondents do not use fluorescence in open surgery (unless the perfusion is macroscopically uncertain with the naked eye, in which case 41.4% of them do). The survey also suggests that there is no agreement on dilution, dosing and timing, as many different practices are adopted based on personal judgment. Only approximately half of the surgeons reported a reduced leak rate with fluorescence perfusion assessment, but 65.5% of them strongly believe that this technique will become a minimum requirement for colorectal surgery in the future. CONCLUSION: The survey confirms that fluorescence is becoming a widely used technique in colorectal surgery. However, both the indications and methods still vary considerably; furthermore, the surgeons' perceptions of the results are insufficient to consider this technology essential. This survey emphasizes the need for further research to reach recommendations based on solid scientific evidence.

Impact of COVID-19 pandemic waves on changes in surgical urgency volumes and severity in the regional hospital network of Trento (Northern Italy): a descriptive epidemiological analysis.

OBJECTIVES: to analyse both direct and indirect impacts on surgical admissions, surgical rates, and clinical picture severity of the two COVID-19 pandemic waves in a hospital network covering an entire province (Trento, located in Trentino-Alto Adige Region, Northern Italy). DESIGN: retrospective epidemiological study. SETTING AND PARTICIPANTS: data regarding the patient load of the Surgical Urgencies/Emergencies flows (SUEs) of the Local Health Authority of the Autonomous Province of Trento derived from the Hospital Discharge Record (HDR) information flow. The population in study was that of patients hospitalized in the entire Province of Trento. This study compares the volume and characteristics of urgent/emergency surgery during the 2020 COVID-19 pandemic with the homologous period in 2019, subdividing the analysed pandemic period in 3 separated groups: • phase I (March-May 2020); • phase II (June-August 2020); • phase III (October-December 2020). The 3 groups represent, respectively: the 1st pandemic wave proclamation of national lockdown from 9 March to 18 May; the summer pandemic remission; the 2nd pandemic wave with partial restrictions on circulation and commercial activities. Clinical and surgical records of SUE population among these 3 periods (March-May; June-August; October-December) of both 2020 and 2019 were analyzed and compared. MAIN OUTCOME MEASURES: the overall number of admissions and surgical rates for SUEs in the study periods were chosen as primary outcomes. The same outcomes were analysed for the most represented diagnoses in the SUEs population: diverticulitis, intestinal obstruction, appendicitis, cholecystitis, gastrointestinal (GI) perforations, pancreatitis, traumas. To assess the degree of clinical picture severity, variables coming from the hospital discharging charts, commonly associated to worst outcomes in term of mortality and morbidity, such as age, length of hospital stay, DRG weight, and patients not discharged at home were extrapolated from the electronic database. A numerical weight was then assigned to each variable, obtaining a scoring system from 0 to 15 (severity index). RESULTS: the number of admissions for SUEs in the studied period showed a sinusoidal trend, with a dramatic decrease in phase I and III (-46.6% and -31.6%, respectively). This trend was also observed even by stratifying admissions for the most frequent pathologies, except for gastrointestinal perforations and pancreatitis. The surgical rate among hospitalised patients for SUEs was 35.2% in phase, significantly higher than that of 2019 (25.6%). Considering the most frequent diagnoses individually, some had a progressive increase in the surgical rate in phases I and II (diverticulitis, bowel obstructions, cholecystitis), others showed an initial decrease and then settled on values ​​not far from those of 2019 (GI perforations and appendicitis), others again had an initial significant increase and then gradually returned to values ​​similar to those of 2019 in phase III (traumas). The mean patients age was significantly higher in phase I than in 2019 (p-value <0.001) and in phase II (p-value <0.05). Consistently with the trend of the number of urgent admissions, even the severity index calculated on the SUEs population showed a sinusoidal trend with and evident increase during the two pandemic waves. CONCLUSIONS: the effect of the COVID-19 pandemic on SUEs was mainly indirect, manifesting itself with a significant reduction in surgical admissions, particularly in phases I and III. Conversely, in the same phases, the surgical rate showed a significant increase compared to 2019. The stratified analysis confirmed these findings for the most frequent diagnoses except for GI perforations and pancreatitis. The clinical pictures were more severe in the two pandemic waves than in the reference period of 2019. Although with a slight numerical attenuation, in general, the second pandemic wave confirmed the first one findings.

Management and 1-year outcomes of anastomotic leakage after elective colorectal surgery.

PURPOSE: To analyze different types of management and one-year outcomes of anastomotic leakage (AL) after elective colorectal resection. METHODS: All patients with anastomotic leakage after elective colorectal surgery with anastomosis (76/1,546; 4.9%), with the exclusion of cases with proximal diverting stoma, were followed-up for at least one year. Primary endpoints were as follows: composite outcome of one-year mortality and/or unplanned intensive care unit (ICU) admission and additional morbidity rates. Secondary endpoints were as follows: length of stay (LOS), one-year persistent stoma rate, and rate of return to intended oncologic therapy (RIOT). RESULTS: One-year mortality rate was 10.5% and unplanned ICU admission rate was 30.3%. Risk factors of the composite outcome included age (aOR = 1.08 per 1-year increase, p = 0.002) and anastomotic breakdown with end stoma at reoperation (aOR = 2.77, p = 0.007). Additional morbidity rate was 52.6%: risk factors included open versus laparoscopic reoperation (aOR = 4.38, p = 0.03) and ICU admission (aOR = 3.63, p = 0.05). Median (IQR) overall LOS was 20 days (14-26), higher in the subgroup of patients reoperated without stoma. At 1 year, a stoma persisted in 32.0% of patients, higher in the open (41.2%) versus laparoscopic (12.5%) reoperation group (p = 0.04). Only 4 out of 18 patients (22.2%) were able to RIOT. CONCLUSION: Mortality and/or unplanned ICU admission rates after AL are influenced by increasing age and by anastomotic breakdown at reoperation; additional morbidity rates are influenced by unplanned ICU admission and by laparoscopic approach to reoperation, the latter also reducing permanent stoma and failure to RIOT rates. TRIAL REGISTRATION: ClinicalTrials.gov # NCT03560180.

Analysis of risk factors for lymph nodal involvement in early stages of rectal cancer: when can local excision be considered an appropriate treatment? Systematic review and meta-analysis of the literature.

Background. Over the past ten years oncological outcomes achieved by local excision techniques (LETs) as the sole treatment for early stages of rectal cancer (ESRC) have been often disappointing. The reasons for these poor results lie mostly in the high risk of the disease's diffusion to local-regional lymph nodes even in ESRC. Aims. This study aims to find the correct indications for LET in ESRC taking into consideration clinical-pathological features of tumours that may reduce the risk of lymph node metastasis to zero. Methods. Systematic literature review and meta-analysis of casistics of ESRC treated with total mesorectal excision with the aim of identifying risk factors for nodal involvement. Results. The risk of lymph node metastasis is higher in G ≥ 2 and T ≥ 2 tumours with lymphatic and/or vascular invasion. Other features which have not yet been sufficiently investigated include female gender, TSM stage >1, presence of tumour budding and/or perineural invasion. Conclusions. Results comparable to radical surgery can be achieved by LET only in patients with T(1) N(0) G(1) tumours with low-risk histological features, whereas deeper or more aggressive tumours should be addressed by radical surgery (RS).

Sleeve gastrectomy as revisional procedure for failed gastric banding or gastroplasty.

BACKGROUND: Laparoscopic sleeve gastrectomy (LSG) is considered an effective multipurpose operation for morbid obesity, although long-term results are still lacking. Also, the best procedure to be offered in the case of failed restrictive procedures is still debated. We here reported our results of LSG as a revisional procedure for inadequate weight loss and/or complications after adjustable gastric banding or gastroplasty. METHODS: Since April 2005, 57 patients (20 men and 37 women), with a mean age of 49.9 +/- 11.9 years, underwent revisional LSG, 52 after laparoscopic adjustable gastric banding/adjustable gastric banding and 5 after vertical banded gastroplasty at our institution. The mean interval from the primary procedure to LSG was 7.54 +/- 4.8 years. The LSG was created using a 34F bougie with an endostapler, after removing the laparoscopic adjustable gastric band or the anterior portion of the band in those who had undergone vertical banded gastroplasty. An upper gastrointestinal contrast study was performed within 3 days after surgery and, if the findings were negative, a soft diet was promptly started. RESULTS: A total of 41 patients had undergone concurrent band removal and LSG and 16 had undergone band removal followed by an interval LSG. Three cases required conversion to open surgery because of a large incisional hernia. The mean operative time was 120 minutes (range 90-180). One patient died of multiple organ failure from septic shock. Three patients (5.7%) developed a perigastric hematoma, 3 (5.7%) had leaks, and 1 had mid-gastric short stenosis. The median hospital stay was 5 days. The mean body mass index at revisional LSG was 45.7 +/- 10.8 kg/m(2) and had decreased to 39 +/- 8.5 kg/m(2) after 2 years, with a mean percentage of the estimated excess body mass index lost of 41.6% +/- 24.4%. Two patients required a duodenal switch for insufficient weight loss. CONCLUSION: LSG seems to be effective as revisional procedure for failed LAGB/vertical banded gastroplasty, although with greater complication rates than the primary procedures. Larger series and longer follow-up are needed to confirm these promising results.