Active clinical trials for "Carcinoid Tumor"

Participants in this study have been diagnosed with a tumor such as a carcinoid, neuroendocrine tumor, neuroblastoma, Ewing's sarcoma, or brain tumor that has cells which carry somatostatin receptors. The purpose of this research study is to see if the tumor can be identified using a special procedure called a positron emission tomography (PET) scan and how the results of this imaging procedure will change the management of the tumor.

Urinary measure of 5-hydroxyindolacetic acid (5HIAA) is an important marker for the diagnosis and follow-up of patients with small-intestine neuroendocrine tumors. Although this marker has good specificity, its sensitivity is moderate and its dosage is constraining, since it requires urine collection over 2-3 days and specific diet. Preliminary data suggested that overnight 5HIAA value may be representative of 24-hour 5HIAA value, and that plasma 5HIAA dosage could be a valuable alternative to urine 5HIAA dosage. The main objective of this study is to compare sensitivity and specificity of overnight 5HIAA value, 24-hour 5HIAA value and plasma 5HIAA value, in patients with small-intestine neuroendocrine tumors.

A case series was built after review of available literature by searching four databases (PubMed, Embase, Medline and Cochrane Library) for observational studies or case reports on routine prophylactic TCT for MEN-1 and the development of thymic carcinoids.

Serotonin has recently been identified as a major regulator of bone formation. Gut-derived serotonin inhibits bone formation, and early animal studies have shown that inhibition of gut-derived serotonin has anabolic effects on bone in ovariectomised rodents. This pathway has potential to be developed as a new anabolic treatment for osteoporosis in humans. Carcinoid neuro-endocrine tumours produce very high levels of serotonin, and so it might be expected that patients with carcinoid disease would have reduced bone formation, low bone mass and fractures. However, this has not been apparent in clinical practice. There may be a discrepancy between rodent models and human disease. This study aims to identify whether patients with carcinoid disease have reduced bone mass, reduced bone formation or high fracture rates. The investigators will conduct a cross-sectional observational case-control study of patients with carcinoid disease in the Sheffield neuro-endocrine tumour clinic and gender-, age- and body mass index (BMI)-matched controls.

Neuroendocrine cancer is an unusual disease and often goes undetected by routine imaging. The 68Ga-DOTATATE PET Scan is a novel scanning method that may have improved sensitivity and resolution specifically for neuroendocrine tumors. Patients with neuroendocrine tumors will be imaged with this agent and it will be compared to conventional imaging methods to determine the safety and efficacy of this radiopharmaceutical.

The study is designed to study the safety and effectiveness of 123I-MIBG as a diagnostic imaging agent in evaluating patients with known or suspected neuroendocrine tumors.

This research involves the study of neuroendocrine tumors in order to better understand how the disease grows and spreads. This study requires will use tissue collected from from biopsies performed during your regular medical care (i.e. tissue leftover after your diagnosis has been made) and/or blood and urine samples. This study may lead to the development of special materials that could be used, in the future, to treat neuroendocrine tumors or to follow the response of neuroendocrine tumors to treatment

This trial studies whether a telephone-based physical activity intervention before and after lung cancer surgery can be provided to older patients and their caregivers. The trial also aims to understand whether patients and family caregivers will be satisfied with the intervention. Participating in physical activity such as walking before and after lung cancer surgery may improve functional status and recovery in older patients and their family caregivers.

The NET-PACS trial is a Prospective Assessment of patients with neuroendocrine tumors and current or prior history of Carcinoid Syndrome or diarrhea undergoing peptide receptor radionuclide therapy with or without telotristat ethyl. The main goal of the study is to demonstrate the feasibility of serial in-depth assessment of patients with neuroendocrine tumors and current or prior history of carcinoid syndrome or diarrhea undergoing treatment with PRRT using telotristat ethyl compared to placebo. We aim to report and describe from a patient's perspective the multi-faceted impact of carcinoid syndrome in patients with NETs and the changes on treatment while getting PRRT using telotristat ethyl compared to placebo.

The primary objective of this study is to analyse the concentration dopamine and serotonin in thrombocytes of patients with renal cell carcinoma and neuro-endocrine tumours compared to the concentrations of these catecholamines in healthy volunteers. The concentration dopamine and serotonin in thrombocytes with and without medication will also be evaluated.