View clinical trials related to Rectal Neoplasms.
Filter by:The goal of the trial is to observe the changes of 68Ga FAPI signal before and after total neoadjuvant therapy for rectal cancers, and the correlation between the image parameters, immune checkpoints expression as well as the patient outcome. The trial will recruit patients with biopsy-confirmed rectal cancer aged 18 years old or older, with WHO/ECOG Performance Status 0-1, and eligible for total neoadjuvant therapy at the clinicians' discretion. After signing the informed consent, the participants will undergo a standard staging work-up if not already done, including colonoscopy and cross-sectional images such as CT, MR, and FDG-PET. Kidney function (by serum creatinine) and liver function (by serum alanine aminotransferase) will also be assessed. Only patients with stage II-III rectal cancer will be recruited. If patients meet the inclusion and exclusion criteria, they will undergo the first 68Ga-FAPI PET within 30 days before the beginning of total neoadjuvant therapy. At 22-24 weeks into the TNT, follow-ups for response evaluation will be conducted, including colonoscopy and cross-sectional images such as CT, MR, and FDG-PET. The second 68Ga-FAPI PET will be performed within one month of these exams. Afterward, participants will either undergo surgery or have image follow-ups every 3 months. The participants will be followed up for up to 2 years after the second 68Ga-FAPI PET, and immunochemical staining with CD47, CD73, PD-L1, and FAP on the biopsy or surgical specimens will be performed in one batch to avoid batch-to-batch variation.
This is prospective, multi centre study evaluating a novel type of defunctioning loop stoma after low anterior resection for rectal cancer. Patients will be operated with a complete splenic flexure mobilisation and total mesorectal excision. An anastomosis will be fashioned at the pelvic floor. This will leave a redundant colon which will be brought up and matured in the left iliac fossa. Patient bowel function and quality of life will be monitored at baseline and at one year postoperatively, when the stoma will typically have been reversed. Dehydration and kidney injury are expected to become infrequent in comparison with the main alternative loop ileostomy. About 20 patients will be included in this pilot study.
A comprehensive study with prospectively collected data. These patients were assigned to either the taTME group or the laTME group according to the surgery procedure received
The goal of this clinical trial is to learn about whether it is safe to omit dissection of the No.253 lymph nodes in mid and low rectal cancer surgery. The main question it aims to answer is that if it is possible to achieve the same long-term survival with and without the dissection of the No.253 lymph node in mid and low rectal cancer surgery. Participants will underwent laparoscopic rectal radical resection with or without the dissection of the No.253 lymph node.
we evaluated all related clinical and pathologic data of rectal NET cases, including the resection margin status, NET grading, and lymphovascular invasion status. Finally, the present study was aimed at (1) determining the risk factors for LN and distant metastases in colorectal NETs (2) clarifying the clinical significance of the salvage treatment for colorectal neuroendocrine tumors following initial endoscopic resection with positive resection margin status and (3) compare different salvage treatment of this uncommon disease through conducting a large, multi-center cohort study.
This study aims to evaluate the efficacy of erectile rehabilitation with Sildenafil, in men treated with neoadjuvant proctectomy and radiotherapy for rectal cancer, in preventing long-term erectile dysfunction at 12 months post-operatively.
The study focuses on the scientific and clinical evaluation of online adaptive radiotherapy (ART) using the Varian/SHS ETHOS treatment system. In this study, radiation treatment plans are dynamically adjusted on a daily basis over several weeks of therapy to account for anatomical shifts in either the tumour or adjacent normal tissue - a capability that has been difficult to achieve due to technical limitations. With the ETHOS accelerator, such real-time adjustments can be made based on cone beam computed tomography (CBCT). This is a prospective observational study with the primary objective of investigating the feasibility and acceptability of performing ART with ETHOS for different tumour entities. The study will also evaluate the feasibility of integrating multi-parametric data sets into the ART workflow, such as standardised electronic feedback on treatment toxicity from both patients (ePROMS) and physicians (ePRT).
Analysis of cost effectiveness of robotic rectal resection, either sphincter preserving or abdominoperineal extirpation, in the German diagnosis related groups (DRG) system.
Evaluation of the efficacy and safety of interleucin-2 combined with PD-1 monoclonal antibody and CAPOX in preoperative neoadjuvant therapy for locally advanced rectal cancer - a single-center, single-arm, open-label clinical trail.
This is a multicenter, superior, randomized controlled trial designed to compare Robotic-assisted total mesorectal excision (RATME) and laparoscopic-assisted total mesorectal excision (LATME) for middle and low rectal cancer. The primary endpoint is the incidence of intersphincteric resection (ISR). The secondary outcomes are coloanal anastomosis (CAA), conversion to open, conversion to transanal TME (TaTME), incidence of abdominoperineal resection (APR), postoperative morbidity and mortality within 30 days after surgery, pathological outcomes, long-term survival outcomes, functional outcomes, and quality of life.