View clinical trials related to Cerebral Metastases.
Filter by:Cerebral metastases represent a significant problem for oncological management. It is estimated that 20-40% of patients with cancer will develop metastatic cancer to the brain during the course of their illness. 18F-fluoropivalate ([18F]FPIA) is a new tracer that images short chain fatty acid (SCFA) uptake in tumours, a key component of fatty acid oxidation. The aim of this study is to quantify the degree of early step fatty acid oxidation in cerebral metastases as imaged by [18F]FPIA Positron Emission Tomography (PET)/Magnetic Resonance Imaging (MRI). The investigators hypothesise that FPIA uptake will be higher in metastases that are treatment naïve compared to those that have undergone treatment, in keeping with viable tumour cells having a high propensity to generate ATP and NADPH via fatty acid oxidation under bioenergetic stress.
Few studies have evaluated the use of fluorescein sodium for the resection of brain tumours (especially glioblastomas) but also cerebral metastases. We therefore propose to evaluate the technique of fluorescence guided microsurgery (fluorescein sodium) compared to the conventional microsurgical technique in the resection of cerebral metastases in adults in order to specify, by a prospective and randomised study, the assistance provided by this technique in the quality of resection and the gain in terms of overall survival and local control of brain disease.
To determine the feasibility of processes and instruments with an overarching purpose to guide the design of a larger study. To determine the feasibility of individuals with metastatic brain tumor(s) to engage in physical activity(PA) and cognitive rehabilitation (CR) as in an outpatient therapy setting.
The purpose of this study is to determine whether a local fractionated radiation therapy achieves a better local tumor control after complete surgical metastases resection at 6 month as compared to observation alone. Further it should be evaluated if cognitive functioning and quality of life is similar in both groups.
The patients carrying a complicated primary lung cancer brain metastases die in less than 3 months of delay disease in the absence of treatment. The median survival of these patients is approximately six months when the treatment associated with radiotherapy chemotherapy based on cisplatin is now the standard treatment. In most studies the patients die of their brain disease in one case only two, so it is likely that some patients do not require brain irradiation (prognosis in this case is linked to extra-cerebral disease ). The benefits for patients in group B (without systematic irradiation) are not to suffer the side effects of this radiation. The risks are in the same group to see brain metastases become symptomatic. The role of cerebral radiotherapy in the patients treated with chemotherapy is unclear: should all patients be irradiated systematically (since the "reference" treatment is involved and with the aim of obtaining better control of the brain lesions and maintaining a better neurological status) or should only the patients showing cerebral progression be irradiated (avoidance of possibly useless brain radiotherapy and its side effects). The aim of this study is to better determine the position of cerebral radiotherapy in this context. Main objective: determine whether there is a difference in terms of progression-free survival between a therapeutic strategy with initial systematic brain radiotherapy followed by chemotherapy cis-platine/alimta + / - Bevacizumab and strategy with an initial chemotherapy cis-platine/alimta + / - Bevacizumab associated with brain radiotherapy only in cases of cerebral progression in patients with NSCLC with asymptomatic brain metastases
In standard care for patients diagnosed with a primary or secondary (metastasis) cerebral tumor, there is currently complex clinical situations in which the clinic and Magnetic Resonance Imagery (MRI) do not allow for the medical team to arrive at a conclusive diagnosis. The therapeutic proposition requires then a delay in additional follow-up of at least 3 months in order to clarify the situation, with a potential delay in diagnosis and therefore therapeutic care. The contribution of cerebral molecular imagery could allow for new additional information to be brought in or to increase the confidence index in the diagnosis in order to comfort the therapeutic collective attitude proposed in the multidisciplinary meeting (MM). 3.4-dihydroxy-6-18F-fluoro-L-phenylalanine (18F-FD0PA), dopamine precursor amino-acid, Position Emission Tomography (PET), allows for the studying in vivo of the proteic transmembrane transport in gliomatous tissue; active transport happens through a sodic-independent canal, increased in malicious transformations, and in which kinetics can give an indication regarding the development of the primary tumor. In MRIs, tumor tissue growth after injecting the contrast product translates to a rupture in the Blood-Brain Barrier (BBB), while tumor extraction from the radiopharmaceutical is independent of the state of integrity of the BBB and whose only function is metabolic tissue activity. This method of imagery thus appears as a promising contribution to conventional imagery. Furthermore, different to 18F-FDG (18F-2-fluoro-2-deoxy-D-glucose fluorodeoxyglucose), similar to the largely used glucose in oncologic molecular imagery, exploration of harmful glioma in 18F-FDOPA, is not compromised by background noise activity, and is almost useless in a healthy cerebral cortex, with the exception of striatal physiological fixation used as a level of reference. The best performances in terms of positive and negative predictive value were defined in the literature with a tumor/striatum threshold of 1. According to the latest and current European recommendations, turning to PET when caring for high-level gliomas patients can be proposed in the evaluation of therapeutic responses. However, very few studies have evaluated the in-practice current clinical contributions of PET and put it into perspective with classic clinical radiological data.
Hypothesis: the pattern of MRI contrast enhancement after gadolinium injection is different in tumors that respond well to gamma knife. We are going to acquire sequential T1-weighted images of brain lesions before, during and after injection of Gd-DTPA. This will be repeated before and after a treatment with gamma knife. We will then analyse our results to see if there are common enhancement characteristics between lesions that will respond well to the radiosurgery treatment. Response will be clinically assessed by tumor volume as determined by MRI approximately 4 to 6 months after treatment.