View clinical trials related to Resection Margin.
Filter by:This monocentric early feasibility first in human study is intended to evaluate safety and performance of intraoperative detection of light signals during electrosurgical breast cancer resection. In consequence the data should also be taken to adapt technical features according to the findings. The study results will be utilized to design and to calculate the sample size for future pivotal studies after finalizing this study and to adapt the technical features of the system and/ or device. In the future pivotal study, the effectiveness of method and the reduction in R1 resection rate will be assessed with the final goal to provide continuous or real-time information about the tissue type that is currently cut. The primary endpoint for this first in human feasibility study is the percentage of patients with no serious adverse event related to the investigational device. After signing the informed consent the doctor and research team will determine if the participant meets all requirements for this study. During the second visit (V2) they will receive the treatment procedure with the investigational medical device (IMD). The follow up visit (V3) will be performed up to 7 days after the treatment procedure at the day of discharge from the hospital.
This study aims to explore the 2-year DFS (disease-free survival) rate and organ retention rate and to explore the ORR, PCR rate, 2y-OS， and quality of life of patients.
The number of breast cancer survivors is constantly growing. Breast conserving surgery (BCS) is equal or superior to mastectomy both regarding survival and quality of life (QoL). Hence, as many patients as possible should be treated using BCS. The results indicate that the rate of mastectomies in Finland is higher than in Europe, while the rate of reoperations due to insufficient margins after BCS is lower in Finland than globally. With this study we aim to identify the optimal balance of radicality and tissue-conservation in BCS. The aim of this study is to measure the volume of the resected breast tissue and the width of the healthy tissue margins and to compare these with the radiological and histological tumor size and with the size of the breast and their correlation with theoretically optimal and excised volumes. This is a national prospective multicenter study conducted in five breast units. 250 women with primary, unilateral, cTis-T2 breast cancer eligible for BCS will be recruited. The diagnostics and treatment of the patients will be carried out following the Finnish national guideline. The size of the breast and the radiological size of the tumor will be measured preoperatively using mammograms and MRI. The histological tumor volume and the resection volume will be measured postoperatively. The optimal resection volume is calculated as the difference of the total resection volume and the volume of the tumor with an added 1 cm margin. To map the impact of the treatment on QoL and body image, the patients are surveyed using EORTC-QLQ-C30 and BREAST-Q Breast Conserving Therapy Module QoL questionnaires preoperatively, 3-8 weeks postoperatively, and two years after the radiotherapy. Objective evaluation of the aesthetic outcome is assessed by the BCCT.core software that uses medical photographs taken at the same time points as the questionnaires are filled.
A prospective multicenter randomized non-inferiority clinical trial, to evaluate the efficacy and safety of 1.0 cm-safety margin surgery, compared with 1.5 cm safety margin surgery for cT1-2N0 oral tongue cancer Summary: A current standard primary treatment for oral tongue cancer is a curative surgical resection with/without adjuvant radiation treatments (or chemoradiation). In pathological analysis of surgical specimens, more than 5 mm of non-tumorous tissues from the tumor border is regarded as a safe negative resection margin, according to the NCCN guideline (the National Comprehensive Cancer Network, Dec 10. 2020). To achieve this clear margin, surgeons are apt to use a 1.0 to 1.5 cm safety margin around the gross tumor during surgery, considering 30-50% tumor shrinkage in tissue fixation process. Many previous retrospective data have been reported to suggest the optimal or proper surgical extent for oral tongue cancer. Wider resection can lead to better local control, however, it sacrifices more normal tissue, resulting in the functional deficit of tongue (speech and swallowing), even with reconstruction. Unfortunately up to now, no prospective comparison of a different surgical safety margin for oral tongue cancer have been conducted to draw a more solid conclusion. Particularly in early stage oral tongue cancer (cT1-2N0), some study results have suggested that less than 5 mm resection margin in pathology specimens can be also safe and effective in terms of tumor control. To achieve a well-grounded result about the proper surgical safety margin in early stage (cT1-2N0) oral tongue cancer, we will compare the outcomes of the two (1.5 cm versus 1.0 cm) surgical safety margin in curative resection for cT1-2N0 oral tongue cancer.
In view of sparse data of precise definition, risk factors, natural history and management of bladder perforation following Transurethral resection of bladder tumour (TURBT). We aim to correlate the relation between the site, depth and extent of resection with bladder perforation. Also, correlation between vertical depth, horizontal extent of resection and recurrence and progression of tumor