Journal of Surgical Oncology最新文献

The main aim of this review is to analyze postoperative complications after cytoreductive surgery and intraperitoneal chemotherapy. Although the literature in this field is ever growing, reporting on complication is not a given. Nevertheless, some main risk factors such as prior surgery, high tumor burden and the center's expertize have an impact on patient outcomes. Transparency is key, if we want to continue to improve.

Introduction: While systemic chemotherapy (SC) is the mainstay of treatment of peritoneal carcinomatosis from small bowel adenocarcinomas (SBA-PC), its efficacy and outcomes remain poor. Therefore, the role of curative-intent surgery needs to be better defined. Using a systematic review and meta-analysis, this study aims to define the role of CRS/HIPEC in patients with SBA-PC.

Methods: A systematic literature search was performed using PubMed and MEDLINE following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines for studies published between 1990 and 2023. Articles were scored and incorporated within approximate normality of means/proportions formulae to compare outcomes of CRS/HIPEC and SC alone.

Results: Ten studies with 461 patients undergoing CRS/HIPEC and seven studies with 285 patients undergoing SC alone were identified. In the CRS/HIPEC group, 215 (46.6%) were male and the median age was 46.5-66 years. The primary tumor was located mostly in the duodenum (n = 169, 36.7%) and ileum (n = 108, 23.4%). Grade was unspecified in most patients (n = 232, 50.3%). Median Peritoneal Cancer Index (PCI) ranged between 10 and 12, and 93.1% underwent complete cytoreduction (CC 0/1). CRS/HIPEC-related major morbidity and mortality was 20.7% (SD = 2.5, 95% CI 15.6-25.6) and 1.7% (SD = 0.8, 95% CI 0.1-3.3), respectively. With a median follow-up of 21.1 (SD = 1.1, 95% CI 18.9-23.3) months, CRS/HIPEC demonstrated median overall survival of 32.3 (SD = 1.19, 95% CI 30-34.6) versus 14.5 (SD = 0.19, 95% CI 14.1-14.9) months for SC alone (p < 0.0003).

Conclusion: In comparison to SC alone, CRS/HIPEC may result in long-term survival with acceptable perioperative morbidity, in select SBA-PC patients with low-volume disease undergoing complete cytoreduction.

Background and objectives: Clinical nomograms have been developed to predict sentinel lymph node (SLN) status in early-stage melanoma patients, but the clinical utility of these tools remains debatable. We created and validated a nomogram using data from a randomized clinical trial and assessed its accuracy against the well-validated Melanoma Institute Australia (MIA) nomogram.

Methods: We developed our model to predict SLN status using logistic regression on clinicopathological patient data from the Multicenter Selective Lymphadenectomy Trial-I. The model was externally validated using the National Cancer Database (NCDB) data set, and its performance was compared to that of the MIA nomogram.

Results: Our model had good discrimination between positive and negative SLNs, with a training set area under the curve (AUC) of 0.706 (0.661-0.751). Our model achieved an AUC of 0.715 (0.706-0.724) compared to 0.723 (0.715-0.731) with the MIA model, using the NCDB set.

Conclusion: Our model performed similarly to the MIA model, confirming that despite using different clinical features and data sets, no clinical nomogram is currently accurate enough for clinical use.

Peritoneal spread is a frequent cause of metastasis in both the synchronous and metachronous settings for patients with pancreatic cancer. Recent improvements in systemic chemotherapy for pancreatic cancer may now allow for the careful selection of patients with oligometastatic disease isolated to the peritoneum who may benefit from consolidative cytoreduction and HIPEC.

Cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy (HIPEC) has been recommended by Peritoneal Surface Oncology Group International (PSOGI) and several other academic organizations as the treatment of choice for selected patients with gastric cancer peritoneal metastasis (GCPM). This review updates the recent progress in CRS+HIPEC for GCPM, with particular focus on the potential curing effects of this approach for subclinical GCPM patients.

Background: Neoadjuvant chemotherapy (NC) for early pancreatic ductal adenocarcinoma (PDAC) remains controversial. We investigate the adoption of NC and its impact on survival in clinical T1 (cT1) PDAC.

Methods: National Cancer Database (2006-2017) was reviewed for cT1 PDAC. Patients receiving NC and surgery were compared with patients undergoing upfront surgery (US).

Results: A total of 5886 patients were included. NC use increased from 4.8% in 2006 to 18.8% in 2017. The NC group (n = 618) versus the US group (n = 5268) had: younger age (66 years vs. 68 years), smaller tumor size (2 cm vs. 2.2 cm), more pancreas head tumors (77% vs. 70.6%), lower lymph-vascular invasion (25.9% vs. 40.6%), and less lymph node positivity (43.6% vs. 54.5%), p < 0.001. Factors associated with receipt of NC were: younger age, recent year of diagnosis, and treatment at an academic program. In the NC group versus the US group, median OS was 35.2 months versus 28.3 months, p < 0.001. Factors associated with improved survival included: well differentiated pathology, R0 surgical margins, and receipt of chemotherapy.

Conclusion: In cT1 PDAC, chemotherapy is associated with improved survival. In a surgery-first approach, only 59% of patients receive adjuvant chemotherapy. These data suggest consideration of neoadjuvant therapy for early pancreatic cancer.

Background and objectives: The watch-and-wait (WW) strategy in patients after complete clinical response (cCR) following chemoradiotherapy for locally advanced rectal cancer (LARC) offers the option of organ preservation. The aim of this study was to assess the oncological outcomes of WW patients treated and followed up in a German referral cancer center.

Methods: In this retrospective study, we analyzed the clinical records of consecutive patients with LARC who underwent neoadjuvant radiotherapy/chemoradiotherapy at our institution between January 2020 and December 2023 and received non-operative management after cCR.

Results: A total of 30 patients undergoing WW for LARC were included. After a median follow-up of 17 months (SD = 10 months), local regrowth occurred in four patients (4/30, 13.3%), and one patient (1/30, 3.3%) developed distant metastasis. No predictor for tumor regrowth could be identified based on radiological findings at diagnosis, including cT4 and/or cN2, involvement of the mesorectal fascia, extramural vascular invasion or infiltration of the anal sphincter/levator. All patients with local regrowth were successfully surgically treated (R0 resection).

Conclusion: Nonoperative management for patients with cCR after neoadjuvant therapy for LARC proved to be safe. R0 resection was successfully achieved in all patients who underwent salvage surgery.

Introduction: The incidence of anal squamous cell carcinoma (SCC) has been increasing over the last decades. Human papillomavirus (HPV) infection accounts for more than 90% of anal cancers, and HIV co-infection increases the risk of invasive cancer. Men who have sex with men (MSM) with HIV are the highest risk group for developing anal high-grade squamous intraepithelial lesions (aHSILs), which can be found in 45%-50% of these patients and are precursor lesions for invasive cancer. Anal cytology is an effective screening tool, but it lacks sensitivity. High-resolution anoscopy (HRA) is the gold standard procedure for diagnosis and treatment of aHSILs. Recent data suggest that early detection and treatment of aHSILs could prevent the development of invasive cancer in this population.

Objective: The objective of the study was to describe the implementation of an office-based screening program for anal cancer prevention in a Comprehensive Cancer Center in Brazil.

Methods: Training included participation in the International Anal Neoplasia Society (IANS) HRA course at UCSF Medical Center Mount Zion in San Francisco, CA, USA, by three colorectal cancer surgeons. In-person and hands-on training was provided by a specialist through the AIDS Malignancy Consortium (AMC) of the US NIH. Equipment purchased and provided by the AMC included a colposcope with a digital camera, a hands-free mouse pedal, and a photo documentation imaging software program that allows images to be recorded for documentation and training purposes.

Results: The program was implemented in 2022 after a delay of more than two years due to the COVID-19 pandemic. An average of 24 exams are performed monthly. Patients with HIV aged 35 years or older who are undergoing antiretroviral therapy were recruited from the metropolitan area of Rio de Janeiro and referred by primary care providers for screening. Patients diagnosed with aHSILs are scheduled for in-office ablative treatment in the clinic. From March 2022 to June 2024, 324 exams were performed, and aHSIL was found in 38.2% of 220 high-risk patients, including 45 of 129 MSMs (34.9%), 6 of 19 transgender women (31.6%), and 33 of 72 women living with HIV (45.8%). A total of 69 treatments for aHSIL were performed in 62 patients. Patients are followed on a regular basis and long-term results are awaited, including the effectiveness of local therapy for aHSIL.

Conclusions: The screening and treatment program was successfully implemented in a tertiary comprehensive Cancer Center. Team training and external proctorship were decisive for the achievement of benchmark standards. The program aims to permanently provide screening for the prevention of anal cancer through the detection and treatment of aHSIL within the National Cancer Institute of Brazil for populations considered at-risk for anal cancer.

Introduction: We examined trends in major morbidity and mortality following total gastrectomy for malignancy in a national cohort.

Methods: The National Surgical Quality Improvement Program was used to identify patients who underwent total gastrectomy for malignancy from 2007 to 2021. Joinpoint regression was used to determine annual percent changes (APCs) in thirty-day postoperative major morbidity, mortality, and length of stay (LOS). Major morbidity included deep and organ space surgical site infection, venous thromboembolism, cardiac event, pneumonia, acute renal failure, sepsis, and respiratory failure.

Results: Of 3515 patients, the median age was 65 years (IQR = 55-73), 59% were male, and 57.9% were White. Major morbidity was 23%, which did not change over time (APC = -1.4, 95% CI = -3.4 to 0.58), nor were there changes in individual morbidities with time. The most common morbidities were organ space surgical site infection (9.2%) and pneumonia (8.5%). Mortality rate in the study cohort was 2.7% and did not change (APC = -6.2, 95% CI = -13.0 to 1.1). LOS (median 9 days) also did not vary with time (APC = -2.3, 95% CI = -7.8 to 3.9). There was an increase in patients with diabetes (21.6% vs. 11.2%, p < 0.05), BMI ≥ 30 (31.1% vs. 18.2%, p < 0.05), and ASA IV-V status (11.6% vs. 3.5%, p < 0.05).

Conclusion: Morbidity and mortality following total gastrectomy for malignancy have not significantly changed over the last fifteen years. While this may in part be explained by increased patient comorbidity, efforts should be made to improve patient selection and mitigate postoperative complications to allow for timely adjuvant therapies.