Rectal cancer

PURPOSE: The population in Western countries differs significantly from that in Eastern countries, and the prevalence of lateral pelvic lymph node (LPLN) involvement in Western populations remains largely unknown due to the limited application of LPLN dissection (LPLND). This discrepancy is primarily attributed to the higher body mass index commonly observed in Western populations, which increases the risk of intraoperative complications. Consequently, the aim of this study is to describe a specific Western clinico-radiological selection tool for LPLND, namely, the lateral pelvic lymph node positivity (LPLNP) score...

Prostate cancer continues to be a prominent health concern for men globally. Current screening techniques, primarily the prostate-specific antigen (PSA) test and digital rectal examination (DRE), possess inherent limitations, with prostate biopsy being the definitive diagnostic procedure. The invasive nature of the biopsy and other drawbacks of current screening tests create the need for non-invasive and more accurate diagnostic methods. This study utilized 1 H-NMR (Proton Nuclear Magnetic Resonance) based serum metabolomics to differentiate between prostate cancer (PCa) and benign prostatic hyperplasia (BPH)...

Angiotensin-converting enzyme inhibitors (ACEIs) and angiotensin receptor blockers (ARBs) are commonly used antihypertensive drugs. However, the impact that the use of ACEI and ARB drugs will have on the survival of patients with hypertension and cancer is still unclear. Therefore, the present study aimed to investigate the effects of ACEI and ARB use on the survival of patients with cancer. The Embase, PubMed and Web of Science databases were used to systematically analyze the survival of hypertensive patients with cancer treated with ACEIs or ARBs...

BACKGROUND: Radiotherapy (RT) is a critical component of treatment for locally advanced rectal cancer (LARC), though patient response varies significantly. The variability in treatment outcomes is partly due to the resistance conferred by cancer stem cells (CSCs) and tumor immune microenvironment (TiME). This study investigates the role of EIF5A in radiotherapy response and its impact on the CSCs and TiME. METHODS: Predictive models for preoperative radiotherapy (preRT) response were developed using machine learning, identifying EIF5A as a key gene associated with radioresistance...

RATIONALE AND OBJECTIVES: To develop and validate multimodal deep-learning models based on clinical variables, multiparametric MRI (mp-MRI) and hematoxylin and eosin (HE) stained pathology slides for predicting microsatellite instability (MSI) status in rectal cancer patients. MATERIALS AND METHODS: A total of 467 surgically confirmed rectal cancer patients from three centers were included in this study. Patients from center 1 were randomly divided into a training set (242 patients) and an internal validation (invad) set (105 patients) in a 7:3 ratio...

This article briefly summarizes clinically relevant new aspects of the recently published German, Austrian and Swiss onkopedia guideline for the treatment of locally advanced rectal cancer. Main aspects comprise (i) the use of total neoadjuvant therapy (TNT) for rectal cancers with high risk features, (ii) treatment with neoadjuvant chemotherapy for patient with a low risk for local recurrence, (iii) immunotherapy using dostarlimab in patients with MSI high /dMMR rectal cancer as well as (iv) intended organ preservation as a treatment goal...

INTRODUCTION: Colorectal cancer (CRC) represents a significant health burden worldwide, with a notable increase in early-onset colorectal cancer (EOCRC) cases, defined as those diagnosed before the age of 50 years. MATERIALS AND METHODS: Using data from Taiwan's national cancer registry and a retrospective cohort from Chang Gung Memorial Hospital, this study analyzed CRC cases diagnosed between 2008 and 2019. The analysis compared the EOCRC and late-onset CRC (LOCRC) groups in terms of clinicopathological characteristics, pre-diagnostic symptoms, and survival outcomes...

BACKGROUND: Multidisciplinary team meetings (MTMs) are considered a pillar of cancer care; however, evidence of the independent benefit of MTMs on survival in rectal cancer is controversial. METHODS: This population-based cohort analysis included patients undergoing surgery for primary rectal cancer with curative intent. We drew data derived from three clinical audits conducted in Catalonia from 2011 to 2020. The primary outcome was 2-year survival. Multivariable Cox regression analysis was used to assess the hazard ratio for death in patients whose cases were versus were not discussed in a preoperative MTM...

PURPOSE: Although abdominoperineal resection (APR) is essential for a certain population of patients with low rectal cancer, it is technically difficult and sometimes contains oncological disadvantages. Thus, the use of the transperineal total mesorectal excision (TpTME) approach might overcome such concerns regarding APR. METHODS: In total, 27 patients who underwent conventional APR (conventional group) and 49 patients who underwent APR using the TpTME approach (TpTME group) for low rectal cancer were included...

No abstract text is available yet for this article.

BACKGROUND AND PURPOSE: Intensity modulated proton therapy (IMPT) enables generation of conformal dose plans with organ at risk (OAR) sparing potential. However, pelvic IMPT robustness is challenged by inter-fraction motion caused by constant anatomical variations. In this study, the dosimetric impact of inter-fraction motion on target coverage and dose to OAR was quantified in the prospective phase II study ReRad-II on dose-escalated proton reirradiation for locally recurrent rectal cancer (LRRC)...

Background and study aims The safety of endoscopic submucosal dissection (ESD) has been reported, and the risk of lymph node metastasis is low for colorectal cancer if depth of invasion is the only non-curative factor on histological evaluation. ESD is increasingly performed even if submucosal (SM) invasion is suspected. However, reports about endoscopic findings for the criteria to predict ESD resectability remain limited. Endoscopic ultrasound (EUS) can directly visualize the tomographic image of the gastrointestinal wall and may help predict ESD resectability...

BACKGROUND: Pelvic exenteration (PE) is a radical procedure involving multi-visceral resection for locally advanced pelvic malignancies. Such radical surgery is associated with prolonged operating theater time and hospital stay, as well as a substantial risk of postoperative complications, and therefore significant financial cost. This study aimed to comprehensively detail the inpatient cost of PE at a specialist center in the Australian public sector. METHODS: A retrospective costing review of consecutive PE operations at Royal Prince Alfred Hospital in Sydney between March 2014 and June 2022 was performed...

Neoadjuvant radiotherapy is the standard care of locally advanced rectal cancer. Although a majority of patients received the same dose, the curative efficacy varies among individuals. In recent years, cancer treatment has entered the era of precise medical care, and how to identify patients for proper treatment by molecular signature is an important path of individualized therapy. This study aimed to establish and validate a genome-based model for adjusting radiation dose (GARD) for Chinese locally advanced rectal cancer through gene expression microarrays, and to evaluate the response of the GARD model in predicting the efficacy of neoadjuvant radiotherapy...

[This corrects the article on p. 205 in vol. 104, PMID: 37051159.].

BACKGROUND: Prostate cancer (PCa) is a leading cause of mortality in men worldwide. Prostate-specific antigen (PSA) testing is a standard method for PCa detection, yet its association with age, digital rectal examination (DRE) results, and lower urinary tract symptoms (LUTS) remains understudied, particularly in the Lebanese population. OBJECTIVE: This study aimed to investigate the association of PSA levels with age, DRE results, and LUTS severity among Lebanese men...

We present a case of metastatic rectal cancer in a 52-year-old woman, initially manifested as an acute asthma exacerbation. The patient was referred to the colorectal surgery team due to the discovery of a rectal mass after she sought treatment for shortness of breath following Clorox (cleaning product) exposure. Imaging revealed a right upper lobe nodule alongside a significant rectal mass, leading to a diagnosis of stage 4 colorectal cancer via colonoscopy and flexible sigmoidoscopy. The rectal mass was subsequently resected through robotic laparoscopic low anterior resection with coloproctostomy...

BACKGROUND: Sleep traits have been linked to diseases; particularly, their impact on cancer has received increasing attention. This study aimed to investigate whether sleep traits have a causal relationship with colorectal cancer (CRC) using two-sample Mendelian randomization (TSMR). METHODS: Genetic instrumental variables (IVs) for seven sleep traits (sleep duration, ease of getting up in the morning, morning chronotype, daytime napping, insomnia symptoms, snoring, and daytime dozing) were selected from pooled data from published genome-wide association studies (GSWSs)...

BACKGROUND: Colorectal cancer (CRC) is the third most common form of cancer worldwide in terms of incidence and the second in terms of mortality with 1.9 million new cases and 930,000 deaths reported in 2020. Corresponding numbers in the U.S. are 150,000 and 53,000, respectively. Although the majority of CRCs in the U.S. and other high-income countries are in adults aged 50 and older, there has recently been a considerable rise in early-onset CRC, so that 17,930 cases in the U.S. (12% of total cases) are diagnosed in individuals younger than age 50, representing the equivalent of 49 new cases per day...

BACKGROUND: Currently, the benefits of the administration of adjuvant chemotherapy (AT) in pathological low-risk rectal mucinous adenocarcinoma (RM) with T1-3N0M0 are unclear. The objective of this study is to retrospectively investigate the clinical significance of AT in terms of survival outcomes for patients with pathological T1-3N0M0 RM using data from a large population. METHODS: The patient data were collected from the Surveillance, Epidemiology, and End Results (SEER) Program...