View clinical trials related to Pelvic Neoplasms.
Filter by:Cone beam computed tomography (CBCT) images are routinely used in radiation treatment delivery workflows to align patients with the treatment beam. Conventional CBCT image quality is sufficient for this task but not good enough for other radiotherapy-related tasks, such as contouring anatomical structures and calculating radiation dose distributions. HyperSight is a new CBCT imaging system manufactured by Varian Medical Systems. The purpose of this study is to evaluate the integration of the HyperSight imaging system with Varian's TrueBeam radiotherapy system, a linear accelerator with a C-arm gantry that rotates about the patient to delivery radiation to the target malignancy. HyperSight CBCT images will be acquired prospectively from patients who are receiving radiation treatment. The HyperSight/TrueBeam system will be used for imaging only; patients receive their radiation treatment on cleared devices and no aspect of their treatment is affected by participation in the study. HyperSight images collected during the study will be evaluated for quality and utility and compared to conventional CBCT images as well as fan beam CT images used for treatment planning.
In this prospective, open, multicenter, multi-arm, observational controlled study, the investigators investigated the impact of different pelvic radiation doses of anal cancer and rectal cancer patients on the dynamic changes of anal function, and analyzed the correlation between the changes of anal function and the score of anal incontinence in the radiation dose≤50Gy group and >50Gy group. The study population includes 124 patients with anal canal cancer or rectal cancer who have received sphincter preservation treatments (including radiochemotherapy), aged from 18 to 75 years old undergoing sphincter preservation treatments at The Sixth Affiliated Hospital, Sun Yat-sen University and Nanfang Hospital, Southern Medical University. The primary outcome is the average resting pressure of anal sphincter. The secondary outcomes are maximum anal sphincter contraction pressure and Wexner continence score. Evaluations will be carried out at the following stages: baseline (T1), after radiotherapy or chemotherapy (before surgery, T2), after surgery (before closing the temporary stoma, T3), and at follow-up visits (every 3 to 6 months, T4, T5……). Follow-up for each patient will be at least 2 years.
This phase II trial tests how well enfortumab vedotin (EV) and pembrolizumab works in treating patients with bladder cancer of variant histology (a group of less common types of bladder cancer) that have spread to nearby tissue or lymph nodes (locally advanced) or that has spread from where it first started (primary site) to other places in the body (metastatic). Enfortumab vedotin is a monoclonal antibody, enfortumab, linked to an anticancer drug called vedotin. Enfortumab attaches to a protein called nectin-4 on cancer cells in a targeted way and delivers vedotin to kill them. It is a type of antibody-drug conjugate. Immunotherapy with monoclonal antibodies, such as pembrolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving enfortumab vedotin and pembrolizumab may kill more tumor cells in patients with locally advanced or metastatic bladder cancer of variant histology.
Retrospective and prospective observational study of patients undergoing advanced pelvic oncological resection for maligancy including multi visceral resection, beyond TME resection and sacrectomy/flap reconstruction/urinary reconstruction at Glasgow Royal Infirmary. Goal is to study and report outcomes for patients to characterise and understand major complications, natural history of resectional patients and identify areas for future interventional study.
The empty pelvis syndrome is an unsolved and poorly defined problem severely affecting patients that have pelvic exenteration surgery, and also the teams looking after them. It is unclear what the anatomical and pathophysiological causes of the empty pelvis syndrome are, how it can be prevented, and how its sequelae can be measured. The evidence to guide decisions around the empty pelvis syndrome is of low quality, and so there is a large amount of variation in approaches between different hospitals. This consensus study will define a core outcome set for the empty pelvis syndrome, and establish current levels of consensus on pathophysiology and mitigation of the empty pelvis syndrome through a modified-Delphi process involving both healthcare professionals and patient representatives.
The main purpose of this study is to assess the efficacy of precision preoperative embolization in decreasing operative blood loss, reducing surgical complications in pelvic tumor surgery. Furthermore the study aims at describing the vascularity in a series of pelvic tumors, and to correlate this with perioperative blood loss.
In a transvaginal tru-cut biopsy, guided by ultrasound, a needle is inserted through the vaginal wall into a pelvic lesion and a few pieces of tissue are obtained for examination. This clinical trial is organized to evaluate the safety and efficacy of transvaginal tru-cut biopsy in a large group of patients with tumors in the small pelvis.
The large intestine is the last part of the digestive tract. It absorbs water and dietary substances. However, it is also where most of our bacteria are resident. These bacteria are important for our health and influence many different diseases, including Colon Cancer, Ulcerative Colitis and Crohn's disease. The gut bacteria can also potentially influence responses to treatments in other cancers by helping to change the responses to radiotherapy and chemotherapy. The interactions between these bacteria and the rest of our cells are only now becoming understood and there is little research on the interactions between these bacteria and cancer radiotherapy treatments in pelvic cancer. We will therefore explore this in more detail. We will ask for samples of the patient's poo before their treatment for pelvic cancers. This will include patients with bladder, prostate, cervical, ovarian, womb or colorectal cancers. By doing so we will be able to compare the profile of gut bacteria with responses to treatments, thereby increasing our understanding of the colonic bacteria. To do this we process the poo specimens to remove the bacterial genetic material (DNA) of the bacteria and process it on a machine to read the genetic code and also study the metabolites that they will produce. We can then make a direct comparison between different samples of the relative numbers of different bacteria present. In some cases, we will compare this to metabolites and inflammatory and immune markers identified in a blood sample. This work might help future patients by determining what are the best bacteria to have in the colon during cancer treatments. These could potentially be given to patients, before their cancer treatment, in the form of probiotic medications, should there be an improvement demonstrated in our research. Alternatively we could alter the patients' intakes of specific dietary fibres to boost these bacteria specifically.
This is a feasibility study investigating the image quality of a new, high-performance cone beam CT (CBCT) used for on-couch imaging during radiotherapy treatments.
In recent years, template guidance has been applied and developed in the field of puncture related operations, such as template-assisted radioactive seed implantation. With the guidance of template, needle pathway of seed implantation, biopsy and fiducial marker implantation can be precisely planned actual operation, which is conducive to the accurate proceeding. Templates can be divided into coplanar templates and non-coplanar templates. The digital coplanar template coordinate puncture system has been developed in China and has been applied in clinical practice. In previous studies, coplanar template assisted CT-guided radioactive seed implantation has good clinical feasibility for head and neck cancer. However, the accuracy of Coplanar Template Assisted Seed Implantation for Abdominal and Pelvic cancer are lacking in prospective studies. The study aims to prospectively observe the accuracy and safety of Coplanar Template Assisted Seed Implantation for Abdominal and Pelvic cancer.