View clinical trials related to Thyroid Nodule.
Filter by:The purpose of this study is to evaluate thyroid nodule's volume, structure and vascularisation changes following HIFU therapy assessed by ultrasonography
1. Principal objective: The primary objective of this study is to validate the diagnostic performance of a Dx15 molecular test based on molecular transcriptomic signatures previously identified in distincts cohorts of samples to determine the malignant or benign profile of a thyroid nodule with indeterminate cytological analysis. The target population includes categories III [Follicular lesion of undetermined significance or Atypia of undetermined significance (FLUS/AUS)] and IV [Follicular neoplasm / Suspicious for follicular neoplasm (FN/SFN)] of the Bethesda classification. The expected target performance of the Dx15 molecular test in this target population is 95% for specificity with a lower limit of the 95% confidence interval of 87%, and 75% for sensitivity. 2. Secondary objectives: - To assess the performance of the Dx15 test in samples collected during the study by fine-needle aspiration (FNA) in each and in all of the indeterminate Bethesda classification categories (categories III, IV and V: suspected malignancy) - To assess the performance of the TI-RADS ultrasonography score for diagnosing thyroid cancer in patients presenting with a thyroid nodule and having available cytological analysis results. - To check the potential of performance of the molecular signature as well as of its combination with other tests by applying it in a blind manner to samples collected from patients presenting with thyroid nodules and whose aspiration biopsy result is benign (Bethesda category II), malignant (Bethesda category VI) or non-diagnostic (Bethesda category I) - To assess the performance of mutation tests (isolated mutations, chromosomal rearrangements) for diagnosing thyroid cancer in patients presenting with a thyroid nodule and with available cytological results. - To estimate the performance of the combination of the Dx15 test result and other diagnostic tools such as mutation tests and/or the TI-RADS score to diagnose thyroid cancer in patients presenting with a thyroid nodule and having an indeterminate cytology result (especially AUS/FLUS and FN/SFN). The combination of Dx15 diagnostic test results with other study parameters will also be considered in order to establish the option of an algorithmic approach for the diagnosis of thyroid cancer. - To compare the results of cytological and histological analyses obtained in the centres and by centralised reading and assessment of the impact of its results on the other study analyses and parameters. - Additional analyses deemed relevant on the basis of various parameters and data collected during the study. 3. Objective of exploratory research: - The use of all or part of the FNA samples for the purpose of research as part of thyroid cancers, especially with the objective of optimising or identifying additional molecular signatures.
The purpose of this study is to determine whether the use of molecular imaging using FDG-PET/CT could prevent unnecessary diagnostic thyroid surgery in case of indeterminate cytology during fine-needle aspiration biopsy.
We aim to study the effect of local anesthetic when used in conjunction with general anesthesia during thyroidectomy or parathyroidectomy. We hypothesize there is equivalent pain control between bilateral superficial cervical plexus block and local wound infiltration when used in conjunction with a general anesthetic.
The purpose of this study is to assess the efficacy and safety of High Intensity Focalized Ultrasound (HIFU) in the treatment for toxic Thyroids nodules
Background: The main goal when diagnosing thyroid nodules, is to differentiate the few malignant from the overwhelming background of benign nodules. Currently available pre-operative tests are unable to rule out malignancy in a subset of patients and diagnostic thyroid surgery is necessary. Therefore, there is a need to develope the diagnostic tools for pre-operative diagnostic work-up of thyroid nodules. The study will investigate a novel ultrasonographic technique called Shear Wave Elastography (SWE) in the pre-operative evaluation of thyroid nodules. Aim: To evaluate the diagnostic value of SWE in the pre-operative diagnosis of thyroid nodules in a tertiary surgical center. Perspectives: An optimization of the pre-operative risk-stratification and diagnosis of thyroid nodules can reduce unnecessary thyroid surgery, with a reduction in morbidity and better use of the economic and surgical resources.
Thyroid cancer is the most common endocrine malignancy and its incidence is rapidly increasing. Palpable thyroid nodules are very common, affecting up to 5% of the general population. Nevertheless, only 5% of the thyroid nodules harbor malignancy, hence the obvious need to accurately characterise these nodules. Ultrasound guided fine needle aspiration biopsy (FNAB) is the most important tool in assessing the nature of thyroid nodules, however, in up to 30% of the biopsies the results are indeterminate. In this proposal, the investigators hypothesize that leftover cells in the FNAB needle may be utilized for molecular analysis with an established microRNA panel and distinguish between malignant and benign lesions. Despite established studies on the diagnostic utility of microRNAs in thyroid nodules, the effect of microRNAs on specific target genes involved in thyroid cancer is poorly studied. In this proposal the investigators hypothesize that the microRNAs identified in our panel will affect intracellular pathways by regulating target genes that are involved in thyroid tumorigenesis. The investigators present preliminary data that confirms that microRNA panel may identify malignancy in thyroid nodules. In aim 1 the investigators will identify the expression profile of miRNAs in the different thyroid cancers. the investigators will statistically quantify the threshold of miRNA dysregulation for malignancy on a large number of tumor and benign samples. This will serve as matrix for defining malignancy on the FNAB samples. In aim 2 the investigators will establish a reliable reproducible method to extract RNA from cells left over in FNAB samples. the investigators' preliminary data support the feasibility of the method and it has not been described previously. This will be the first study that will compare cytology results and microRNA panel analysis on the very same FNAB cells. It will mimic the exact clinical scenario that such microRNA panel can be utilized in the future. Finally, in aim 3 the investigators will characterize the effect of microRNAs on target genes expression. the investigators will identify possible target genes from bioinformatics databases and will perform quantitative measurement of mRNA level of target gene by real time PCR and immunohistochemistry. These studies will hopefully support the utility of microRNAs as a diagnostic tool to accurately identify malignancy in thyroid FNAB leftover cells and point out possible target genes for future therapeutic approaches. This could impact many patients, as thyroid cancer is the 5th most common cancer in women, and the most rapidly growing malignancy in both men and women.
The purpose of the study is to investigate the contribution of molecular cytological analysis (CMA) and shear wave elastography ShearWave (SWE) in the diagnosis of nodules with indeterminate cytology (IC)
One of the major side effects of surgery to remove the thyroid gland is transient (lasting for a short time) low calcium levels in the blood, or "hypocalcemia." Low calcium levels can cause symptoms such as numbness around the mouth, tingling or cramping in the hands and feet, severe muscle spasms, inability to breathe, or heart rhythm (heart beat) abnormalities. Severe symptoms are life threatening, so it is important to start the management of these symptoms in the hospital. Treating low calcium levels sometimes require patients to spend a few extra days in the hospital. The human body needs vitamin D to function and stay healthy. Vitamin D helps the body get the calcium needed to make strong bones and teeth. The purpose of this study is to determine if taking vitamin D before surgery to remove the thyroid gland affects whether or not you may have low calcium levels after your surgery and to test the hypothesis that those who are given the Vitamin D before surgery will have decreased hypocalcemia and a shortened hospital stay.
1. acquire the environmental iodine status of Hangzhou 2. acquire the iodine status of population in Hangzhou 3. acquire the prevalence of thyroid diseases in Hangzhou 4. explore the association between iodized salt and thyroid disease