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The primary objective of the study is to create a biobank of oral smears permitting to identify the genetic locus/loci associated with an increased risk to develop meningiomas after cyproterone acetate (CPA) (Androcur®) treatment, using a GWAS approach. As the secondary objectives, the study aims: - to evaluate the importance of the genetic susceptibility. - to record the frequence of homonodependant cancers occuring in female patients with Androcur® associated meningioma and in their first-degree relatives. - to describe clinical, radiological, histological characteristics of the patients who have...
Background: For newly-diagnosed patients with brain metastasis, conventional whole-brain radiation therapy (WBRT) might still remain a common palliative management even for those with brain oligometastases. However, WBRT-related late consequences, particularly a decline in neurocognitive functions (NCFs), are a major concern. Actually, WBRT-related neurocognitive dysfunction is usually characterized as deterioration involving learning and memory, in which the extremely radiosensitive hippocampus indeed plays a critical role. In order to postpone or mitigate the effect of conventional WBRT-induced neurocognitive impairments, there...
Cancers develop in two different ways. First, cancer cells can become invisible to the immune system by stop having proteins on their surface that are required for the immune system to recognize them. In this scenario, tumors do not attract any immune cells (e.g. white blood cells) whatsoever or they do not attract specialized white blood cells against cancer cells, called lymphocytes. White blood cells are the type of immune cells that attack foreign cells, such as cancer cells or normal cells infected with viruses or bacteria. Second, cancer cells can still grow side-to-side with white blood cells but are able to hide from them. As a ...
The most aggressive primary brain tumors in adults, glioblastomas, are characterized by a profound local and systemic immune suppression. During tumor progression, the infiltration of inflammatory leukocytes, especially of myeloid origin, endowed with immunosuppressive function is observed. Aim of this study is to evaluate myeloid cell infiltrate and iron metabolism in tumor-associated macrophages by combining a multimodal MRI imaging technique with immunophenotyping of the tumor microenvironment.
The overall aim of this project is to improve the outcome of patients diagnosed with ependymoma by improving and harmonising the staging and the standard of care of this patient population and to improve the investigators understanding of the underlying biology thereby informing future treatment. The program will evaluate new strategies for diagnosis (centralized reviews of pathology and imaging) and new therapeutic strategies in order to develop treatment recommendations. Patients will be stratified into different treatment subgroups according to their age, the tumour location and the outcome of the initial surgery. Each...
This clinical trial examines an investigational scan (64Cu-DOTA-trastuzumab positron emission tomography [PET]/magnetic resonance imaging [MRI]) in imaging patients with HER2+ breast cancer that has spread to the brain (brain metastasis). Diagnostic procedures, such as 64Cu-DOTA-trastuzumab PET/MRI, may help find HER2+ breast cancer that has spread to the brain and determine whether cancer in the brain takes up trastuzumab, which may predict for response to trastuzumab deruxtecan (the standard of care chemotherapy).
This trial studies how well an investigational scan called 68Ga-DOTATATE PET/CT works in diagnosing pediatric patients with neuroendocrine tumors that have spread to other places in the body (metastatic). A neuroendocrine tumor is an abnormal growth of neuroendocrine cells, which are cells resembling nerve cells and hormone-producing cells. 68Ga-DOTATATE is a radioactive substance called a radiotracer that when used with PET/CT scans, may work better than standard of care MIBG scans in diagnosing pediatric metastatic neuroendocrine tumors and targeting them with radiation therapy.
This trial investigates how well 7T MRI scan works in imaging central nervous system tumors. Diagnostic procedures, such as 7T MRI, may help find and diagnose central nervous system tumors and help measure a patient's response to earlier treatment. The goal of this trial is to learn if a new MRI system can provide better quality images than a standard MRI.
This trial studies the use of a special type of computed (CT) scan called dual energy CT in detecting gastrointestinal carcinoid tumors. CT is an imaging technique that uses x-rays and a computer to create images of areas inside the body. Dual energy computed tomography is a technique used during routine CT scans to help obtain and process the image after the scan is complete. Doctors want to learn if dual energy computed tomography can help improve the detection of carcinoid tumors during routine CT scans.
The study is designed to use infusion of a non-radioactive, naturally occurring isotope of glucose (13C) in patients undergoing surgical resection for a newly identified brain mass to obtain the metabolic phenotype of the tumor, and correlate it with the histopathological diagnosis. In each patient, 13C NMR spectral analysis of tumor extracts will be obtained after intraoperative infusion of [U-13C]glucose or [1,2-13C]glucose. Whenever feasible, patients will undergo 3 preoperative imaging studies - 18FDG-PET, diffusion tensor imaging with 1H-spectroscopy on 3T MR scanner, and ultra high resolution MR imaging on the 7T MR scanner....
