View clinical trials related to Pathology.
Filter by:Prostate cancer (PCa) remains one of the most prevalent malignancies affecting men globally. The disease spectrum of PCa ranges from indolent tumors, which may require minimal to no intervention, to aggressive, potentially lethal forms. The complexity of PCa underscores the critical need for precise diagnostics, as early and accurate detection is key to improving patient outcomes and tailoring appropriate treatment strategies. There have been remarkable advancements in biopsy technology. Significant strides in magnetic resonance imaging (MRI), especially with the establishment of the Prostate Imaging Reporting and Data System (PI-RADS), have substantially improved the accuracy of PCa detection. The combination of MRI with traditional biopsy methods, including MRI-targeted biopsy (MRI-TBx) and systematic biopsy (SBx), also marks a major advancement in the field. Despite advances in PCa detection, the need for improving diagnostics and in-depth assessment of the latest PBx techniques through extensive, longitudinal studies remains critical. Besides, based on the world health organization (WHO) classification, PCa includes a range of pathological forms beyond the commonly known acinar adenocarcinoma. However, the prevalence and demographic distribution of non-adenocarcinoma types, as well as the characteristics of patients with these rarer forms, remain unclear. Leveraging PBx records spanning over 10 years and involving 10,038 cases, this study aims to shed light on temporal trends in PBx positivity, the evolving clinical profiles of PCa patients, and the differences in clinicopathological characteristics of PCa between Western and Asian populations.
Fractures of the wrist (fractures of the distal radius) are one of the most common fractures with almost 60 000 injuries per year in Sweden. One known complication following these fractures is that the long extensor tendon of the thumb ruptures (extensor pollicis longus tendon, EPL tendon). This leads to disability to stretch the thumb in order to grip bigger objects. Earlier studies show that the tendon ruptures in about 3-5% of all wrist fractures. These ruptures occur some weeks to months after the fracture. There are different theories about the cause of the rupture. One theory is that the fracture creates a bleeding in the tight area that the tendon lies, leading to high pressure and therefore low blood supply to the tendon. Another theory is that the tendon comes in contact with some sharp bonny fragments in this area that injures the tendon when it moves. Such tendon ruptures need almost always some type of surgical intervention in order to reconstruct the function of the thumb. A common problem is that the quality of the tendon is insufficient for just suturing it. Another problem is that the muscle becomes stiff after the rupture. However, there is no objective method to determine how stiff the muscle is. The most common treatment option is the transfer of one of the two extensor tendons of the index finger to the thumb, a so-called extensor indicis proprius to extensor pollicis longus transfer. The motivation behind this operation is that the muscle of EPL is so stiff that cannot be used to lift the thumb. However, there is no consensus about the time period after which the EPL muscle can be used to reconstruct the function of thumb. The study aims to investigate the microscopical changes in the muscle and tendon of EPL after such a rupture. Better knowledge of these factors could lead to better understanding of the treatment options. The investigators plan to include in the study all patients that would get operated for an EPL tendon rupture after a fracture of the distal radius at the institution the study is conducted. After oral and written information to the patient and written consent the investigators will take some samples from the ruptured tendon and muscle for microscopical analysis.
To collect lab data from capillary and venous blood specimens for use in analytical research studies to support the development and validation of laboratory procedures.
This study seeks to develop a deep-learning-based intelligent predictive model for the efficacy of neoadjuvant chemotherapy in gastric cancer patients. By utilizing the patients' CT imaging data, biopsy pathology images, and clinical information, the intelligent model will predict the post-neoadjuvant chemotherapy efficacy and prognosis, offering assistance in personalized treatment decisions for gastric cancer patients.
According to the most recent guideline of the National Comprehensive Cancer Network (NCCN), desmoplasia is considered to be a very high risk factor for recurrence, metastasis and death in cutaneous squamous cell carcinoma (cSCC). The presence of desmoplasia is assessed by dermatopathologists during histological examination of cSCCs. However, the inter-observer agreement is between dermatopathologists in the assessment of desmoplasia is unclear. Studies on inter-observer variability in the assessment of differentiation grade in cSCCs showed that there is only a weak to moderate agreement among dermatopathologists in the assessment of differentiation grade (2-4). This study aims to investigate the interobserver agreement of desmoplasia between dermatopathologists. In this prospective study, 50 cSCCs will be assessed for desmoplasia by at least eight dermatopathologists using a predefined definition.
This project focuses on researching chronic rhinosinusitis in patients, employing image processing techniques and molecular biology methods to jointly determine the research objectives: 1. Investigating heterogeneity. 2. Developing an intelligent assessment model. 3. Creating a visual tool for diagnosis and prognosis.
To explore the feasibility and effectiveness of the cranial-caudal mixed medial approach in laparoscopic right hemicolectomy with complete mesocolic excision. Laparoscopic right hemicolectomy using the cranial-caudal mixed medial approach is safe and feasible, can shorten the operation time, reduce the risk of intraoperative bleeding, and has good clinical results.
This study is one of Eastern Cooperative Thoracic Oncology Projects (ECTOP-1016). The goal of this clinical trial is to confirm the concordance rate between intra-operative frozen section pathological diagnosis and post-operative paraffin embedded pathological diagnosis, and use this result to guide surgical treatment for early stage (cT1N0M0) lung adenocarcinomas.
This study is one of Eastern Cooperative Thoracic Oncology Projects (ECTOP-1015). The goal of this clinical trial is to confirm the concordance rate between intra-operative frozen section pathological diagnosis and post-operative paraffin embedded pathological diagnosis, and use this result to guide surgical treatment for early stage (cT1N0M0) lung adenocarcinomas.
This study is one of Eastern Cooperative Thoracic Oncology Projects (ECTOP-1014). The goal of this clinical trial is to confirm the concordance rate between intra-operative frozen section pathological diagnosis and post-operative paraffin embedded pathological diagnosis, and use this result to guide surgical treatment for early stage (cT1N0M0) lung adenocarcinomas.