Hospital variation and outcomes of simultaneous resection of primary colorectal tumour and liver metastases: a population-based study

Surgical Site Infections in Simultaneous Colorectal and Liver Resections for Metastatic Colorectal Adenocarcinoma

BACKGROUND

Surgical site infections (SSIs) are a major driver of morbidity after combined liver and colorectal surgery for metastatic colorectal cancer. Available literature is inadequate to characterize risk factors and benchmarks for quality improvement.

METHODS

Consecutive cases of simultaneous liver and colorectal surgery for colorectal adenocarcinoma from November 2013 through September 2022 were reviewed for SSIs per National Surgical Quality Improvement Program (NSQIP) and National Healthcare Safety Network (NHSN) criteria. Univariable and multivariable logistic regression evaluated associations with NSQIP 30-day organ-space SSIs.

RESULTS

In 580 procedures, the rate of 30-day organ-space SSIs was 16% (n = 94) using NSQIP criteria and 11% (n = 64) using NHSN criteria; 4% (n = 24) had incisional SSIs by both criteria. Most organ-space SSIs were perihepatic, and a minority were associated with bile (26%) or anastomotic (15%) leak. Independent risk factors for organ-space SSIs included major liver resection, upper abdominal (compared with lower abdominal/pelvic) colorectal procedure, and ostomy reversal. Organ-space SSI rates increased over time by approximately 16% per calendar year (p = 0.02) despite a declining rate of major liver resection; incisional SSI rates remained low. Overall, major morbidity was 22%, with 7-day median length of stay (interquartile range 6-9) and 0.3% 90-day mortality.

CONCLUSION

Organ-space SSIs are a significant driver of postoperative morbidity in simultaneous liver and colorectal resections for metastatic colorectal adenocarcinoma. Our findings confirm simultaneous resection remains safe and interventions to mitigate the risk of perihepatic organ-space SSIs in high-risk patients are warranted.

Predictive risk factors for resection surface-related complications after laparoscopic simultaneous resection of primary colorectal tumor and synchronous liver metastases: a single-center retrospective study

BACKGROUND

Laparoscopic simultaneous resection (LSR) of primary colorectal tumors and synchronous colorectal liver metastases (sCRLM) has been recently performed. This study aimed to evaluate the postoperative outcomes after LSR and determine the risk factors for resection surface-related complications (RSRC), such as postoperative biliary fistula and liver-transection surface abscess.

METHODS

Between 2009 and 2022, consecutive patients with sCRLM who underwent LSR were included. We retrospectively analyzed clinicopathological data, including intraoperative factors and postoperative outcomes. The difficulty level of all liver resections was classified according to the IWATE difficulty scoring system (DSS). We then performed univariate and multivariate analyses to identify the risk factors for RSRC.

RESULTS

Of the 112 patients, 94 (83.9%) underwent partial hepatectomy and colorectal surgery. The median DSS score was 5 points (1-11), with 12 (10.7%) patients scoring ≥ 7 points. Postoperative complications were observed in 41 (36.6%) patients, of whom 16 (14.3%) experienced severe complications classified as Clavien-Dindo grade IIIa or higher. There was no postoperative mortality. The most common complication was RSRC (19 patients, 17.0%). Multivariate analysis identified American Society of Anesthesiologists (ASA) classification ≥ 3 [odds ratio (OR) 10.3, 95% confidence interval (CI) 1.37-77.8; P = 0.023], DSS score ≥ 7 points (OR 5.08, 95% CI 1.17-20.0; P = 0.030), and right-sided colectomy (OR 4.67, 95% CI 1.46-15.0; P = 0.009) as independent risk factors for RSRC. Postoperative hospital stays were significantly longer for patients with RSRC than for those without RSRC (22 days vs. 11 days; P < 0.001).

CONCLUSION

Short-term outcomes of LSR for patients with sCRLM were acceptable in an experienced center. RSRC was the most common complication, and high-difficulty hepatectomy, right-sided colectomy, and ASA classification ≥ 3 were independent risk factors for RSRC.

Simultaneous resection for colorectal cancer with synchronous liver metastases: current state-of-the-art

BACKGROUND

A large proportion of patients with colorectal cancer (CRC) presents with synchronous colorectal liver metastases (sCRLM) at diagnosis. Surgical approaches for patients with sCRLM have evolved over the past decades. Simultaneous resection (SR) of CRC and sCRLM for selected patients has emerged as a safe and efficient alternative approach to traditional staged resections.

METHODS

A comprehensive review of the literature was performed using MEDLINE/PubMed and Web of Science databases with the end of search date October 30, 2023. The MeSH terms "simultaneous resections" and "combined resections" in combination with "colorectal liver metastases," "colorectal cancer," "liver resection," and "hepatectomy" were searched in the title and/or abstract.

RESULTS

SRs aim to achieve maximal tumor clearance, minimizing the risk of disease progression and optimizing the potential for long-term survival. Improvements in perioperative care, advances in surgical techniques, and a better understanding of patient selection criteria have collectively contributed to reducing morbidity and mortality associated with these complex procedures. Several studies have demonstrated that SR are associated with reduced overall length of stay and lower costs with comparable morbidity and long-term outcomes. In light of these outcomes, the proportion of patients undergoing SR for CRC and sCRLM has increased substantially over the past 2 decades.

CONCLUSION

For patients with sCRLM, SR represents an attractive alternative to the traditional staged approach and should be selectively used; however, the decision on whether to proceed with a simultaneous versus staged approach should be individualized based on several patient- and disease-related factors.

Staged or Simultaneous Surgery for Colon or Rectal Cancer with Synchronous Liver Metastases: Implications for Study Design and Clinical Endpoints

In patients presenting with colorectal cancer and synchronous liver metastases, the disease burden related to the liver metastasis is the driving cause of limited longevity and, eventually, risk of death. Surgical resection is the potentially curative treatment for colorectal cancer liver metastases. In the synchronous setting where both the liver metastases and the primary tumor are resectable with a relative low risk, the oncological surgeon and the patient may consider three potential treatment strategies. Firstly, a "staged" or a "simultaneous" surgical approach. Secondly, for a staged strategy, a 'conventional approach' will suggest removal of the primary tumor first (either colon or rectal cancer) and plan for liver surgery after recovery from the first operation. A "Liver first" strategy is prioritizing the liver resection before resection of the primary tumor. Planning a surgical trial investigating a two-organ oncological resection with highly variable extent and complexity of resection as well as the potential impact of perioperative chemo(radio)therapy makes it difficult to find the optimal primary endpoint. Here, we suggest running investigational trials with carefully chosen composite endpoints as well as embedded risk-stratification strategies to identify subgroups of patients who may benefit from simultaneous surgery.

Simultaneous resection of colorectal cancer and synchronous liver metastases: what determines the risk of unfavorable outcomes? An international multicenter retrospective cohort study

BACKGROUND

The use of a simultaneous resection (SIMR) in patients with synchronous colorectal liver metastases (sCRLM) has increased over the past decades. However, it remains unclear when a SIMR is beneficial and when it should be avoided. The aim of this retrospective cohort study was therefore to compare the outcomes of a SIMR for sCRLM in different settings, and to assess which factors are independently associated with unfavorable outcomes.

METHODS

To perform this retrospective cohort study, patients with sCRLM undergoing SIMR (2004-2019) were extracted from an international multicenter database, and their outcomes were compared after stratification according to the type of liver and colorectal resection performed. Factors associated with unfavorable outcomes were identified through multivariable logistic regression.

RESULTS

Overall, 766 patients were included, encompassing colorectal resections combined with a major liver resection (n=122), minor liver resection in the anterolateral (n=407), or posterosuperior segments ('Technically major', n=237). Minor and technically major resections, compared to major resections, were more often combined with a rectal resection (29.2 and 36.7 vs. 20.5%, respectively, both P=0.003) and performed fully laparoscopic (22.9 and 23.2 vs. 6.6%, respectively, both P = 0.003). Major and technically major resections, compared to minor resections, were more often associated with intraoperative transfusions (42.9 and 38.8 vs. 20%, respectively, both P = 0.003) and unfavorable incidents (9.6 and 9.8 vs. 3.3%, respectively, both P≤0.063). Major resections were associated, compared to minor and technically major resections, with a higher overall morbidity rate (64.8 vs. 50.4 and 49.4%, respectively, both P≤0.024) and a longer length of stay (12 vs. 10 days, both P≤0.042). American Society of Anesthesiologists grades ≥3 [adjusted odds ratio (aOR): 1.671, P=0.015] and undergoing a major liver resection (aOR: 1.788, P=0.047) were independently associated with an increased risk of severe morbidity, while undergoing a left-sided colectomy was associated with a decreased risk (aOR: 0.574, P=0.013).

CONCLUSIONS

SIMR should primarily be reserved for sCRLM patients in whom a minor or technically major liver resection would suffice and those requiring a left-sided colectomy. These findings should be confirmed by randomized studies comparing SIMR with staged resections.

Extended length of stay in diabetic octogenarians following revision total hip arthroplasty

PURPOSE

Past research has shown diabetic patients, including those of geriatric age, to be at an increased risk of postoperative complications following various surgeries, including revision total hip arthroplasty (rTHA). However, whether these risks are disproportionately greater in octogenarian patients has not been well investigated. This study aimed to determine whether diabetic octogenarians are at an increased risk of postoperative complications following rTHA.

METHODS

The national surgical quality improvement program database was used to identify all diabetic patients who underwent rTHA from 2007 to 2018. Patients were divided into two groups: an aged 65 to 79 cohort and an aged 80 to 89 cohort. Patient demographics, comorbidities, and postoperative complications were assessed and compared between the two aged cohorts, with the utilization of bivariate and multivariate analyses.

RESULTS

Of the 1184 diabetic patients who underwent rTHA, 906 (76.5%) patients were in the aged 65 to 79 cohort and 278 (23.5%) patients were in the aged 80 to 89 cohort. After adjusting for patient demographics and medical comorbidities, compared to patients in the aged 65 to 79 group, diabetic patients who were 80 to 89 years old were found to have an increased risk of extended length of hospital stay (OR 1.67; p = 0.017).

CONCLUSION

Diabetic octogenarian patients have an increased risk for a prolonged hospital stay following rTHA relative to their younger diabetic geriatric counterparts. Orthopedic surgeons should be aware of these increased risks to properly educate diabetic octogenarians and assist in surgical management decision making in these patients considering rTHA.