Tissue morphometric measurements do not predict survival following colorectal cancer surgery.

BACKGROUND: Ex vivo tissue morphometric (TM) measurements have been proposed as a quality marker for colorectal cancer (CRC) surgery. However, their survival associations require clarification. This study aimed to evaluate the feasibility of capturing TM measurements based on ex vivo fresh specimen images and explore the association between these TM measurements and survival outcomes. METHODS: A prospective cohort study at Concord Hospital, Sydney was conducted with Stage I to III CRC patients (2009-2019) who underwent an anterior resection (AR) or right hemicolectomy (RH). Using high-resolution digital photographs of fresh CRC specimens, ex vivo tissue morphometric (TM) measurements-resected mesentery area (TM A), distances from high vascular tie to tumour (TM B) and bowel wall (TM C), and bowel length (TM D)-were recorded using Image J. Overall survival (OS) and disease-free survival (DFS) estimates and their associations to clinicopathological variables were investigated with Kaplan-Meier and Cox regression analyses. Linear regression models tested association between TM measurements and lymph node (LN) yield. RESULTS: Of the 1,425 patients who underwent CRC surgery, TM measurements were performed on 312 patients, with an average age of 69.4 years (SD 12.3), of whom 52.9% were male. The majority had an AR (57.8%). Among AR patients, a 5-year OS rate of 77.4% and a DFS rate of 70.1% were observed, with TM measurements bearing no relationship to survival outcomes. Similarly, RH patients exhibited a 5-year OS rate of 67.2% and a DFS rate of 63.1%, with TM measurements again showing no association with survival. Only TM D (P = 0.02) measurements were associated with the number of LNs examined. CONCLUSION: This study successfully demonstrates the feasibility of measuring TM measurements on photographs of ex vivo fresh specimens following CRC surgery. The lack of association with survival outcomes questions the utility of TM measurements as a quality metric of CRC surgery.

Australian surgeon attitudes and experiences towards completing a higher degree by research.

Objective In Australia, there is little evidence exploring why higher degrees by research (HDRs) are undertaken by surgeons. This study aims to describe the attitudes and experiences of surgical trainees and surgeons towards HDRs. Methods A 23-question cross-sectional survey of surgical trainees and consultant surgeons from three Australian public hospitals was undertaken between August and December 2022. Data were analysed according to stage of career and HDR status and assessed using chi-squared test, with P <0.05 considered significant. Results Out of 270 participants, 72 (27%) completed the survey including 30 (42%) trainees and 42 (58%) consultants. Overall, 43 (60%) participants had completed or were undertaking a HDR, which was similar between trainees (n =18) and consultants (N =25; P =0.968). A HDR was associated with more publications (P <0.5). Respondents with a HDR were more likely to have a salaried academic position (50%) than those without (15%). There was no significant difference in academic appointments based on HDR attainment (P =0.192). For surgical trainees, 93% rated the strengthening of resumes as the primary driver, compared with only 60% of consultants. For consultants, academic career aspirations and research interests were ranked the highest at 64% equally. Lack of time and competing nature of surgical training were equally ranked among all as the key barriers to completing a HDR. Conclusions These results provide insight into the academic pursuits of surgeons with an understanding of the role HDRs play, including the different drivers for Masters and Doctorates. This is important for supporting future surgeons who seek to pursue research.

Low anterior resection syndrome phenotypes-Different symptom profiles for different patients.

AIM: Attention is increasingly being turned to functional outcomes as being central to colorectal cancer (CRC) survivorship. The current literature may underestimate the impact of evacuatory dysfunction on patient satisfaction with bowel function after anterior resection (AR) for CRC. The aim of this study was to investigate the impact of post-AR symptoms of storage and evacuatory dysfunction on patient satisfaction and health-related quality of life (HRQoL). METHOD: A cross-sectional study was performed at an Australian hospital of patients post-AR for CRC (2012-2021). The postoperative bowel function scores used were: low anterior resection syndrome (LARS), St Mark's incontinence, Cleveland Clinic constipation and Altomare obstructive defaecation syndrome scores. Eight 'storage' and 'evacuatory' dysfunction symptoms were derived. A seven-point Likert scale measured patient satisfaction. The SF36v2® measured HRQoL. Linear regression assessed the association between symptoms, patient satisfaction and HRQoL. RESULTS: Overall, 248 patients participated (mean age 70.8 years, 57.3% male), comprising 103 with rectal cancer and 145 with sigmoid cancer. Of the symptoms that had a negative impact on patient satisfaction, six reflected evacuatory dysfunction, namely excessive straining (p < 0.001), one or more unsuccessful bowel movement attempt(s)/24 h (p < 0.001), anal/vaginal digitation (p = 0.005), regular enema use (p = 0.004), toilet revisiting (p = 0.004) and >10 min toileting (p = 0.004), and four reflected storage dysfunction, namely leaking flatus (p = 0.002), faecal urgency (p = 0.005), use of antidiarrhoeal medication (p = 0.001) and incontinence-related lifestyle alterations (p < 0.001). A total of 130 patients (53.5%) had 'no LARS', 56 (23.1%) had 'minor LARS' and 57 (23.4%) had 'major LARS'. Fifty-seven (44.5%) patients classified as having 'no LARS' had evacuatory dysfunction. CONCLUSION: Postoperative storage and evacuatory dysfunction symptoms have an adverse impact on patient satisfaction and HRQoL post-AR. The importance of comprehensively documenting symptoms of evacuatory dysfunction is highlighted. Further research is required to develop a patient satisfaction-weighted LARS-specific HRQoL instrument.

Splenic flexure cancer survival: a 25-year experience and implications for complete mesocolic excision (CME) and central vascular ligation (CVL).

BACKGROUND: The management of splenic flexure cancers (SFCs) in the era of complete mesocolic excision (CME) and central vascular ligation (CVL) is challenging because of its variable lymphatic drainage. This study aimed to compare survival outcomes for SFCs and non-SFCs, and better understand the clinicopathological characteristics which may define a distinct SFC phenotype. METHODS: An observational cohort study at Concord Hospital, Sydney was conducted with patients who underwent resection for colon adenocarcinoma (1995-2019). Clinicopathological data were extracted from a prospective database. Overall survival (OS) and disease-free survival (DFS) estimates and their associations to clinicopathological variables were investigated with Kaplan-Meier and Cox regression analyses. RESULTS: Of 2149 patients with colon cancer, 129 (6%) had an SFC. The overall 5-year OS and DFS rates were 63.6% (95% CI 62.5-64.7) and 59.4% (95% CI 58.3-60.5), respectively. SFCs were not associated with OS (P = 0.6) or DFS (P = 0.5). SFCs were more likely to present urgently (P < 0.001) with obstruction (P < 0.001) or perforation (P = 0.03), and more likely to require an open operation (P < 0.001). These characteristics were associated with poorer survival outcomes. No differences were noted between SFCs and non-SFCs with respect to tumour stage (P = 0.3). CONCLUSION: SFCs have a distinct phenotype, the individual characteristics of which are associated with poorer survival. However, the survivals of SFCs and non-SFCs are similar, possibly because the most important determinant of outcome, tumour stage, is no different between the groups. This may have implications for the surgical approach to SFCs with respect to standardization of CME and CVL surgery for these cancers.

Right hemicolectomy anastomotic leak study: a review of right hemicolectomy in the binational clinical outcomes registry (BCOR).

BACKGROUNDS: Surgery remains mainstay management for colon cancer. Post-operative anastomotic leak (AL) carries significant morbidity and mortality. Rates of, and risk factors associated with AL following right hemicolectomy remain poorly documented across Australia and New Zealand. This study examines the Bowel Cancer Outcomes Registry (BCOR) to address this. METHODS: A retrospective cohort study was undertaken of consecutive BCOR-registered right hemicolectomy patients undergoing resection for colon cancer (2007-2021). The primary outcome measure was AL incidence. Clinicopathological data were extracted from the BCOR. Factors associated with AL and primary anastomosis were identified using logistic regression. AL-rate trends were assessed by linear regression. RESULTS: Of 13 512 patients who had a right hemicolectomy (45.2% male, mean age 72.5 years, SD 12.1), 258 (2.0%) had an AL. On multivariate analysis, male sex (OR 1.33; 95% CI 1.03-1.71) and emergency surgery (OR 1.41; 95% CI 1.04-1.92) were associated with AL. Private health insurance status (OR 0.66; 95% CI 0.50-0.88) and minimally-invasive surgery (OR 0.61; 95% CI 0.47-0.79) were protective for AL. Anastomotic technique (handsewn versus stapled) was not associated with AL (P = 0.84). Patients with higher ASA status (OR 0.47; 95% CI 0.39-0.58), advanced tumour stage (OR 0.56; 95% CI 0.50-0.63), and emergency surgery (OR 0.16; 95% CI 0.13-0.20) were less likely to have a primary anastomosis. AL-rate and year of surgery showed no association (P = 0.521). CONCLUSION: The AL rate in Australia and New Zealand following right hemicolectomy is consistent with the published literature and was stable throughout the study period. Sex, emergency surgery, insurance status, and minimally invasive surgery are associated with AL incidence.

Apical Node Involvement Does Not Influence Prognosis After Potentially Curative Resection for Stage III Colorectal Cancer: A Competing Risks Analysis.

OBJECTIVE: To examine the independent prognostic value of ALN status in patients with stage III CRC. SUMMARY OF BACKGROUND DATA: Early CRC staging classified nodal involvement by level of involved nodes in the operative specimen, including both locoregional and apical node status, in contrast to the American Joint Committee on Cancer/tumor nodes metastasis (TNM) system where tumors are classified by the number of nodes involved. Whether ALN status has independent prognostic value remains controversial. METHODS: Consecutive patients who underwent curative resection for Stage III CRC from 1995 to 2012 at Concord Hospital, Sydney, Australia were studied. ALN status was classified as: (i) ALN absent, (ii) ALN present but not histologically involved, (iii) ALN present and involved. Outcomes were the competing risks incidence of CRC recurrence and CRC-specific death. Associations between these outcomes and ALN status were compared with TNM N status results. RESULTS: In 706 patients, 69 (9.8%) had an involved ALN, 398 (56.4%) had an uninvolved ALN and 239 (33.9%) had no ALN identified. ALN status was not associated with tumor recurrence [adjusted hazard ratio (HR) 1.02, 95% confidence interval (CI) 0.84-1.26] or CRC-specific death (HR 1.14, CI 0.91-1.43). However, associations persisted between TNM N-status and both recurrence (HR 1.58, CI 1.21-2.06) and CRC-specific death (HR 1.59, CI 1.19-2.12). CONCLUSIONS: No further prognostic information was conferred by ALN status in patients with stage III CRC beyond that provided by TNM N status. ALN status is not considered to be a useful additional component in routine TNM staging of CRC.

Recurrence and colon cancer-specific death in patients with large bowel obstruction requiring urgent operation: a competing risks analysis.

AIM: Clinical presentation with large bowel obstruction has been proposed as a predictor of poor long-term oncological outcomes after resection for colorectal cancer. This study examines the association between obstruction and recurrence and cancer-specific death after resection for colon cancer. METHOD: Consecutive patients who underwent resection for colon cancer between 1995 and 2014 were drawn from a prospectively recorded hospital database with all surviving patients followed for at least 5 years. The outcomes of tumour recurrence and colon cancer-specific death were assessed by competing risks multivariable techniques with adjustment for potential clinical and pathological confounding variables. RESULTS: Recurrence occurred in 271 of 1485 patients who had a potentially curative resection. In bivariate analysis, obstruction was significantly associated with recurrence [hazard ratio (HR) 2.23, CI 1.52-3.26, p < 0.001] but this association became nonsignificant after adjustment for confounders (HR 1.53, CI 0.95-2.46, p = 0.080). Colon cancer-specific death occurred in 238 of 295 patients who had a noncurative resection. Obstruction was not significantly associated with cancer-specific death (HR 1.02, CI 0.72-1.45, p = 0.903). In patients who had a noncurative resection, the competing risks incidence of colon cancer-specific death was not significantly greater in obstructed than in unobstructed patients (HR 1.02, CI 0.72-1.45, p = 0.903). CONCLUSION: Whilst the immediate clinical challenge of an individual patient presenting with large bowel obstruction must be addressed by the surgeon, the patient's long-term oncological outcomes are unrelated to obstruction per se.

Ileal Pouch-Anal Anastomosis for Ulcerative Colitis: An Australian Institution's Experience.

PURPOSE: We report outcomes and evaluate patient factors and the impact of surgical evolution on outcomes in consecutive ulcerative colitis patients who had restorative proctocolectomy with ileal pouch-anal anastomosis (IPAA) at an Australian institution over 26 years. METHODS: Data including clinical characteristics, preoperative medical therapy, and surgical outcomes were collected. We divided eligible patients into 3 period arms (period 1, 1990 to 1999; period 2, 2000 to 2009; period 3, 2010 to 2016). Outcomes of interest were IPAA leak and pouch failure. RESULTS: A total of 212 patients were included. Median follow-up was 50 (interquartile range, 17 to 120) months. Rates of early and late complications were 34.9% and 52.0%, respectively. Early complications included wound infection (9.4%), pelvic sepsis (8.0%), and small bowel obstruction (6.6%) while late complications included small bowel obstruction (18.9%), anal stenosis (16.8%), and pouch fistula (13.3%). Overall, IPAA leak rate was 6.1% and pouch failure rate was 4.8%. Eighty-three patients (42.3%) experienced pouchitis. Over time, we observed an increase in patient exposure to thiopurine (P=0.0025), cyclosporin (P=0.0002), and anti-tumor necrosis factor (P<0.00001) coupled with a shift to laparoscopic technique (P<0.00001), stapled IPAA (P<0.00001), J pouch configuration (P<0.00001), a modified 2-stage procedure (P=0.00012), and a decline in defunctioning ileostomy rate at time of IPAA (P=0.00002). Apart from pouchitis, there was no significant difference in surgical and chronic inflammatory pouch outcomes with time. CONCLUSION: Despite greater patient exposure to immunomodulatory and biologic therapy before surgery coupled with a significant change in surgical techniques, surgical and chronic inflammatory pouch outcome rates have remained stable.

Impact of post-haemorrhoidectomy pain relief checklists on pain outcomes: a randomized controlled trial.

BACKGROUND: Haemorrhoidectomy is associated with significant post-operative pain which is primarily managed pharmacologically. Whether a non-pharmacological adjunct such as a checklist can improve pain outcomes after an open haemorrhoidectomy has yet to be studied. The purpose of this study was to determine if a patient-completed checklist of prescribed post-haemorrhoidectomy pain medications would improve pain management after surgery. METHODS: We conducted a dual-centre randomized controlled trial of patients undergoing a Milligan-Morgan haemorrhoidectomy for symptomatic third or fourth degree haemorrhoids. Thirty-five patients were randomized into either a control group which received post-operative pain medication plus a visual analogue scale (VAS) form, or an intervention group which received a post-operative medication checklist in addition to the items the control group received. Both groups recorded their pain levels on the VAS forms at 10.00, 14.00 and 20.00 hours each day for 14 days post-operatively. RESULTS: Patients in the checklist group reported a significantly greater reduction in mean VAS pain score of 2.51 (95% confidence interval (CI) 1.34-3.68; P < 0.001) between day 1 post-op and day 14 post-op compared to 1.86 (95% CI 0.77-2.95; P = 0.001) for the control group. There was no significant difference between mean pain experienced by patients in either group over each of the 14 days individually or overall (P = 0.07). CONCLUSION: The pain medication checklist lead to a greater reduction in pain between day 1 and 14 after an open haemorrhoidectomy compared to standard care but did not significantly reduce mean pain across any individual days or overall.

High prevalence of asymptomatic internal hernias after laparoscopic anterior resection in a retrospective analysis of postoperative computed tomography.

PURPOSE: Internal hernia (IH) after laparoscopic left-sided colorectal resection (small bowel herniating underneath the neo-descending colon) can be a potentially devastating complication, resulting in acute small bowel obstruction or ischemia. IH has been described as a rare occurrence in a few retrospective case series; however, patients undergoing laparoscopic resection seem to be more prone to this complication. We assessed the prevalence of IH in a large cohort of patients who had undergone laparoscopic left-sided colorectal resection for colon or rectal cancer (CRC). METHODS: A database of consecutive patients at a single institution from 2012 to 2017 was reviewed. Postoperative abdominal computed tomography (CT) scans performed for routine cancer follow-up between 3 and 36 months after surgery were assessed retrospectively. RESULTS: During the study period, 276 patients had undergone anterior resection for CRC, with 206 (75%) having been performed laparoscopically. A total of 198 eligible patients were identified, and a follow-up CT scan was available in 105 (53%) of these patients (median time to CT 10 months, range 3-34). Only one of the 198 (0.5%) patients presented with an acute small bowel obstruction secondary to an IH during follow-up. However, the prevalence of asymptomatic IH was noted to be much higher in the postoperative CT scans occurring in 22 of 105 (21%) patients. CONCLUSION: Asymptomatic IH after laparoscopic left-sided colorectal resection is common. Given the potential risk of acute small bowel obstruction and ischemia, routine closure of the mesenteric defect should be considered.

Review of emotional intelligence in health care: an introduction to emotional intelligence for surgeons.

BACKGROUND: The aim of this review is to explain the components of emotional intelligence (EI) and explore the benefits within today's health care system with an emphasis on surgery. EI is a person's ability to understand their own emotions and those of the individuals they interact with. Higher individual EI has multiple proposed benefits, such as reducing stress, burnout and increasing work satisfaction. The business world recognizes EI as beneficial in terms of performance and outcomes. Could surgeons benefit from being more cognisant of EI and methods of assessing and improving EI to reap the aforementioned benefits? METHODS: A search of Embase, Cochrane and Medline databases using the following search terms; emotional intelligen*, surg*, medic* yielded 95 articles. After review of all the literature 39 remaining articles and five text books were included. RESULTS: To perform optimally, surgeons must be aware of their own emotions and others. EI differs from IQ and can be taught, learnt and improved upon. EI is measured via validated self-reporting questionnaires and 'multi-rater' assessments. High EI is positively associated with leadership skills in surgeons, non-technical skills, reduction in surgeon stress, burnout and increased job satisfaction, all of which translate to better patient relationships and care. Future implications of EI have been postulated as a measure of performance, a selection tool for training positions and a marker of burnout. EI should be an explicit part of contemporary surgical education and training.

Immunohistochemistry in screening for heritable colorectal cancer: what to do with an abnormal result.

Recent developments in our understanding of molecular genetics have transformed screening and diagnostic practices for Lynch syndrome. The current standard involves universal tumour analysis of resected colorectal cancer (and ideally polypectomy) specimens using immunohistochemistry and molecular techniques. Patients with abnormal immunohistochemical findings are subsequently referred for definitive mutational testing. This review relates the molecular pathogenesis of Lynch syndrome to current immunohistochemistry-based screening strategies and discusses the interpretation and clinical implications of screening results.

Perianal sepsis: surgical perspective and practical MRI reporting for radiologists.

This article describes the development of a structured MRI reporting template and diagrammatic worksheet for perianal sepsis through collaboration between radiologists and colorectal surgeons at our institution, and the rationale behind each component of the worksheet. Benefits of this reporting worksheet include optimizing communication of key imaging findings that have a real impact on patient management, less time spent on reporting the study, and easier comparison between studies. We illustrate the utility of the report template with case studies. We summarize the current surgical approaches to perianal sepsis to help radiologists focus on reporting the findings relevant to surgical planning.

When does curatively treated colorectal cancer recur? An Australian perspective.

BACKGROUND: While most colorectal cancer (CRC) recurrences reportedly occur within 3 years following curative treatment, many studies are limited by short-term follow-up. This study examines the time to recurrence of CRC in a large Australian cohort with a long follow-up period and assesses whether time to recurrence has changed over time. METHODS: A comprehensive prospective database of patients undergoing resection for CRC is maintained at Concord Hospital, Sydney. Demographic and time to recurrence data were extracted for patients who developed a recurrence following potentially curative resection for colon cancer from 1995 to 2010 and rectal cancer from 1971 to 2010. Non-deceased patients had a minimum of 5 years follow-up. RESULTS: Between 1995 and 2010, 2575 patients with CRC underwent surgery. After exclusions, 386 had recurrence following potentially curative resection, ranging from 1 to 172.5 months (median 20.3) after treatment. Within 1 year, 27.5% recurred, 57.5% by 2 years, 74.6% by 3 years, 85.5% by 4 years and 89.6% by 5 years. There was no difference in time to recurrence between colon and rectal cancers (P = 0.674). Among patients having a potentially curative resection for rectal cancer between 1971 and 2010, 386 recurred. There was no difference in time to recurrence by decade (P = 0.863). CONCLUSION: The majority of recurrences occurred within 3 years of curative treatment. Had surveillance been limited to 5 years, detection of more than 10% of recurrences would have been delayed. Time to recurrence for rectal cancer has not changed in over 40 years, despite treatment advances.

Competing risks analysis of the effect of local residual tumour on recurrence and cancer-specific death after resection of colorectal cancer: implications for staging.

The pTNM staging system for colorectal cancer (CRC) is not entirely effective in discriminating between potentially curative and non-curative resections because it does not account for local residual tumour in patients with stages I, II or III. This study aimed to evaluate the prognostic importance of histologically verified tumour in any line of resection of the bowel resection specimen (TLR) in relation to pTNM stages and to demonstrate how TLR may be integrated into pTNM staging. Information on patients in the period 1995 to 2010 with complete follow-up to the end of 2015 was extracted from a prospective database of CRC resections. The outcome variables were the competing risks incidence of CRC recurrence and CRC-specific death. After exclusions, 2220 patients remained. In 1930 patients with pTNM stages I-III tumour, recurrence was markedly higher in those with TLR than in those without (HR 6.0, 95% CI 4.2-8.5, p < 0.001) and this persisted after adjustment for covariates associated with recurrence. CRC-specific death was markedly higher in the presence of TLR (HR 7.7, CI 5.3-11.2, p < 0.001), which persisted after adjustment for relevant covariates. These results justify removing patients with TLR from pTNM stages I to III and placing them in stage IV, thereby allowing the categorisation of all patients with any known residual tumour into three prognostically distinct groups. This study demonstrates how TLR may be integrated into pTNM staging, thus improving the definition of the three stages which are considered potentially curable (I, II and III).